Build/Test Tools: Update to Ubuntu 26.04, pin the Windows and macOS runners, and update Playwright to 1.64.1 in the 6.5 branch.

.github/workflows/coding-standards.yml

@@ -75,7 +75,7 @@ jobs:
 
   failed-workflow:
     name: Failed workflow tasks
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     permissions:
       actions: write
     needs: [ phpcs, jshint, slack-notifications ]

.github/workflows/end-to-end-tests.yml

@@ -63,7 +63,7 @@ jobs:
 
   failed-workflow:
     name: Failed workflow tasks
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     permissions:
       actions: write
     needs: [ e2e-tests, slack-notifications ]

.github/workflows/javascript-tests.yml

@@ -65,7 +65,7 @@ jobs:
 
   failed-workflow:
     name: Failed workflow tasks
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     permissions:
       actions: write
     needs: [ slack-notifications ]

.github/workflows/php-compatibility.yml

@@ -61,7 +61,7 @@ jobs:
 
   failed-workflow:
     name: Failed workflow tasks
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     permissions:
       actions: write
     needs: [ slack-notifications ]

.github/workflows/phpunit-tests.yml

@@ -39,7 +39,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ ubuntu-latest ]
+        os: [ ubuntu-26.04 ]
         # Test highest and lowest supported version of each major.
         php: [ '7.0', '7.4', '8.0', '8.3' ]
         db-type: [ 'mysql' ]
@@ -49,20 +49,20 @@ jobs:
 
         include:
           # Include jobs for PHP 7.4 with memcached.
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             php: '7.4'
             db-type: 'mysql'
             db-version: '5.7'
             multisite: false
             memcached: true
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             php: '7.4'
             db-type: 'mysql'
             db-version: '5.7'
             multisite: true
             memcached: true
           # Report test results to the Host Test Results.
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             php: '7.4'
             db-type: 'mysql'
             db-version: '5.7'
@@ -90,7 +90,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ ubuntu-latest ]
+        os: [ ubuntu-26.04 ]
         # Test highest and lowest supported version of each major.
         php: [ '7.0', '7.4', '8.0', '8.3' ]
         db-type: [ 'mariadb' ]
@@ -100,13 +100,13 @@ jobs:
 
         include:
         # Include jobs for PHP 7.4 with memcached.
-        - os: ubuntu-latest
+        - os: ubuntu-26.04
           php: '7.4'
           db-type: 'mariadb'
           db-version: '10.11'
           multisite: false
           memcached: true
-        - os: ubuntu-latest
+        - os: ubuntu-26.04
           php: '7.4'
           db-type: 'mariadb'
           db-version: '10.11'
@@ -140,7 +140,7 @@ jobs:
 
   failed-workflow:
     name: Failed workflow tasks
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     permissions:
       actions: write
     needs: [ slack-notifications ]

.github/workflows/props-bot.yml

@@ -48,7 +48,7 @@ jobs:
   # - Removes the props-bot label, if necessary.
   props-bot:
     name: Generate a list of props
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     permissions:
       # The action needs permission `write` permission for PRs in order to add a comment.
       pull-requests: write

.github/workflows/pull-request-comments.yml

@@ -22,7 +22,7 @@ permissions: {}
 jobs:
   # Comments on a pull request when the author is a first time contributor.
   post-welcome-message:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     permissions:
       issues: write
       pull-requests: write
@@ -80,7 +80,7 @@ jobs:
   # Leaves a comment on a pull request with a link to test the changes in a WordPress Playground instance.
   playground-details:
     name: Comment on a pull request with Playground details
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     permissions:
       issues: write
       pull-requests: write

.github/workflows/test-build-processes.yml

@@ -35,11 +35,11 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ ubuntu-latest, windows-latest ]
+        os: [ ubuntu-26.04, windows-2025 ]
         directory: [ 'src', 'build' ]
         include:
           # Only prepare artifacts once.
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             directory: 'build'
             save-build: true
             prepare-playground: ${{ github.event_name == 'pull_request' && true || '' }}
@@ -67,7 +67,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ macos-latest ]
+        os: [ macos-15 ]
         directory: [ 'src', 'build' ]
     with:
       os: ${{ matrix.os }}
@@ -83,7 +83,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ ubuntu-latest, windows-latest ]
+        os: [ ubuntu-26.04, windows-2025 ]
         directory: [ 'src', 'build' ]
     with:
       os: ${{ matrix.os }}
@@ -107,7 +107,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ macos-latest ]
+        os: [ macos-15 ]
         directory: [ 'src', 'build' ]
     with:
       os: ${{ matrix.os }}
@@ -118,7 +118,7 @@ jobs:
   # leave a comment detailing how to test the PR within WordPress Playground.
   playground-comment:
     name: Leave WordPress Playground details
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     permissions:
       actions: write
     continue-on-error: true
@@ -155,7 +155,7 @@ jobs:
 
   failed-workflow:
     name: Failed workflow tasks
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     permissions:
       actions: write
     needs: [ slack-notifications ]

.github/workflows/upgrade-testing.yml

@@ -42,7 +42,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ 'ubuntu-latest' ]
+        os: [ 'ubuntu-26.04' ]
         php: [ '7.0', '7.1', '7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3' ]
         db-type: [ 'mysql' ]
         db-version: [ '5.7', '8.0' ]
@@ -65,7 +65,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ 'ubuntu-latest' ]
+        os: [ 'ubuntu-26.04' ]
         php: [ '7.0', '7.1', '7.2', '7.3', '7.4' ]
         db-type: [ 'mysql' ]
         db-version: [ '5.7', '8.0' ]
@@ -92,7 +92,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ 'ubuntu-latest' ]
+        os: [ 'ubuntu-26.04' ]
         php: [ '8.0', '8.1', '8.2', '8.3' ]
         db-type: [ 'mysql' ]
         db-version: [ '5.7', '8.0' ]
@@ -115,7 +115,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ 'ubuntu-latest' ]
+        os: [ 'ubuntu-26.04' ]
         php: [ '7.0', '7.1', '7.2', '7.3', '7.4' ]
         db-type: [ 'mysql' ]
         db-version: [ '5.7', '8.0' ]
@@ -142,7 +142,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ 'ubuntu-latest' ]
+        os: [ 'ubuntu-26.04' ]
         php: [ '8.0', '8.1', '8.2', '8.3' ]
         db-type: [ 'mysql' ]
         db-version: [ '5.7', '8.0' ]
@@ -175,7 +175,7 @@ jobs:
 
   failed-workflow:
     name: Failed workflow tasks
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     permissions:
       actions: write
     needs: [ slack-notifications ]

package.json

@@ -25,7 +25,7 @@
 	],
 	"devDependencies": {
 		"@lodder/grunt-postcss": "^3.1.1",
-		"@playwright/test": "1.49.1",
+		"@playwright/test": "1.64.1",
 		"@pmmmwh/react-refresh-webpack-plugin": "0.5.11",
 		"@wordpress/babel-preset-default": "7.35.1",
 		"@wordpress/dependency-extraction-webpack-plugin": "5.2.1",