Update pinned versions of workflow steps

.github/workflows/build.yaml

@@ -5,7 +5,7 @@ jobs:
     name: 'Extract version'
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - name: 'Extract turnierplan.NET version'
@@ -35,15 +35,15 @@ jobs:
     needs:
       - extract-version
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v6
       - name: Login to container registry
-        uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
+        uses: docker/login-action@v4
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
       - name: 'Build and push container image'
-        uses: docker/build-push-action@f2a1d5e99d037542a71f64918e516c093c6f3fc4
+        uses: docker/build-push-action@v7
         with:
           context: .
           file: ./docker/turnierplan-amd64/Dockerfile
@@ -57,9 +57,9 @@ jobs:
     needs:
       - extract-version
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v6
       - name: 'Setup .NET SDK 10.x'
-        uses: actions/setup-dotnet@v3
+        uses: actions/setup-dotnet@v5
         with:
           dotnet-version: '10.x'
       - name: 'Restore .NET solution'
@@ -82,9 +82,9 @@ jobs:
       pages: write
       id-token: write
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: "Set up Python 3.x"
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.x"
       - name: "Install requirements"
@@ -94,11 +94,11 @@ jobs:
         run: "zensical build --clean"
         working-directory: "docs"
       - name: "Setup Pages"
-        uses: actions/configure-pages@v5
+        uses: actions/configure-pages@v6
       - name: "Upload artifact"
-        uses: actions/upload-pages-artifact@v3
+        uses: actions/upload-pages-artifact@v5
         with:
           path: "docs/site"
       - name: "Deploy to GitHub Pages"
         id: deployment
-        uses: actions/deploy-pages@v4
+        uses: actions/deploy-pages@v5

.github/workflows/documentation.yaml

@@ -11,9 +11,9 @@ jobs:
     name: "Ensure documentation builds"
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: "Set up Python 3.x"
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.x"
       - name: "Install requirements"

.github/workflows/validate.yaml

@@ -12,19 +12,19 @@ jobs:
     name: 'Build & Test'
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - name: 'Setup .NET SDK 10.x'
-        uses: actions/setup-dotnet@v3
+        uses: actions/setup-dotnet@v5
         with:
           dotnet-version: '10.x'
       - name: 'Setup Node.js 24.x'
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v6
         with:
           node-version: '24.x'
       - name: 'Setup Chrome'
-        uses: browser-actions/setup-chrome@v1
+        uses: browser-actions/setup-chrome@v2
         id: 'setup-chrome'
       - name: 'Set CHROME_BIN environment variable'
         run: 'echo "CHROME_BIN=${{ steps.setup-chrome.outputs.chrome-path }}" >> $env:GITHUB_ENV'
@@ -54,11 +54,11 @@ jobs:
     name: 'E2E Tests (amd64)'
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - name: 'Setup Node.js 24.x'
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v6
         with:
           node-version: '24.x'
       - name: 'Install npm packages'