ci(actions): Fix workflow deprecation follow-up

Force GitHub Pages workflows onto Node 24 while the pages actions
still emit Node 20 deprecation warnings. Relax the workflow guard test
so it validates fetch-depth on checkout without pinning a specific
checkout major version.

.github/workflows/pages.yml

@@ -18,6 +18,9 @@ concurrency:
   group: "pages"
   cancel-in-progress: false
 
+env:
+  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: "true"
+
 jobs:
   build:
     runs-on: ubuntu-latest

.github/workflows/pages.yml.disabled

@@ -18,6 +18,9 @@ concurrency:
   group: "pages"
   cancel-in-progress: false
 
+env:
+  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: "true"
+
 jobs:
   build:
     runs-on: ubuntu-latest

tools/scripts/tests/automation_workflows.test.js

@@ -135,7 +135,7 @@ assert.match(
 );
 assert.match(
   ciWorkflow,
-  /source-validation:[\s\S]*?- uses: actions\/checkout@v4[\s\S]*?with:[\s\S]*?fetch-depth: 0/,
+  /source-validation:[\s\S]*?- uses: actions\/checkout@v\d+[\s\S]*?with:[\s\S]*?fetch-depth: 0/,
   "source-validation should use an unshallowed checkout so base-branch diffs have a merge base",
 );
 assert.match(