ci(actions): Update workflow setup actions

Bump GitHub Actions checkout, setup-node, and setup-python to
Node 24-compatible major versions across the maintained workflows.
This removes the runner deprecation warning without changing the
workflow logic itself.

.github/workflows/ci.yml

@@ -22,12 +22,12 @@ jobs:
       has_quality_checklist: ${{ steps.intake.outputs.has_quality_checklist }}
       has_issue_link: ${{ steps.intake.outputs.has_issue_link }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
 
       - name: Set up Node
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v5
         with:
           node-version: "lts/*"
 
@@ -67,12 +67,12 @@ jobs:
     runs-on: ubuntu-latest
     needs: pr-policy
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
 
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.10"
 
@@ -80,7 +80,7 @@ jobs:
         run: pip install -r tools/requirements.txt
 
       - name: Set up Node
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v5
         with:
           node-version: "lts/*"
 
@@ -134,10 +134,10 @@ jobs:
     runs-on: ubuntu-latest
     needs: [pr-policy, source-validation]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.10"
 
@@ -145,7 +145,7 @@ jobs:
         run: pip install -r tools/requirements.txt
 
       - name: Set up Node
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v5
         with:
           node-version: "lts/*"
 
@@ -200,12 +200,12 @@ jobs:
     env:
       GH_TOKEN: ${{ github.token }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
 
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.10"
 
@@ -213,7 +213,7 @@ jobs:
         run: pip install -r tools/requirements.txt
 
       - name: Set up Node
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v5
         with:
           node-version: "lts/*"
 

.github/workflows/pages.yml

@@ -23,10 +23,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup Node
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v5
         with:
           node-version: "lts/*"
           cache: "npm"

.github/workflows/pages.yml.disabled

@@ -23,10 +23,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup Node
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v5
         with:
           node-version: "lts/*"
           cache: "npm"

.github/workflows/publish-npm.yml

@@ -17,10 +17,10 @@ jobs:
   publish:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Setup Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.10"
 
@@ -28,7 +28,7 @@ jobs:
         run: pip install -r tools/requirements.txt
 
       - name: Setup Node
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v5
         with:
           node-version: "20"
           registry-url: "https://registry.npmjs.org"

.github/workflows/repo-hygiene.yml

@@ -17,12 +17,12 @@ jobs:
     env:
       GH_TOKEN: ${{ github.token }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
 
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.10"
 
@@ -30,7 +30,7 @@ jobs:
         run: pip install -r tools/requirements.txt
 
       - name: Set up Node
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v5
         with:
           node-version: "lts/*"
           cache: "npm"

.github/workflows/skill-apply-optimize-run.yml

@@ -19,7 +19,7 @@ jobs:
       issues: write
       pull-requests: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
       - name: Apply latest Tessl optimization

.github/workflows/skill-review.yml

@@ -10,7 +10,7 @@ jobs:
       pull-requests: write
       contents: read
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: tesslio/skill-review-and-optimize@d81583861aaf29d1da7f10e6539efef4e27b0dd5
         with:
           optimize: 'true'

.github/workflows/star-history.yml

@@ -13,7 +13,7 @@ jobs:
   update-star-history:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Install SVG renderer
         run: |