chore(ci): bump all GitHub Actions to latest + Node 24 LTS

- actions/checkout v4 → v7 (ESM, internal cleanup)
- actions/setup-node v4 → v6 (Node 24 runtime, packageManager auto-cache —
  überschrieben durch explizites 'cache: npm')
- actions/configure-pages v5 → v6 (Node 24 runtime)
- actions/upload-pages-artifact v3 → v5 (Dotfile-Exclusion seit v4 —
  unkritisch, in dist/ keine relevanten)
- actions/deploy-pages v4 → v5 (Node 24 runtime)
- node-version 22 → 24 (v22 seit Okt 2025 nur noch in Maintenance,
  v24 ist Active LTS bis Okt 2026)

Author: Medformatik

.github/workflows/deploy.yml

@@ -18,16 +18,16 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
+      - uses: actions/checkout@v7
+      - uses: actions/setup-node@v6
         with:
-          node-version: "22"
+          node-version: "24"
           cache: npm
       - run: npm ci
       - run: npm run test:run
       - run: npm run build
-      - uses: actions/configure-pages@v5
-      - uses: actions/upload-pages-artifact@v3
+      - uses: actions/configure-pages@v6
+      - uses: actions/upload-pages-artifact@v5
         with:
           path: ./dist
 
@@ -39,4 +39,4 @@ jobs:
       url: ${{ steps.deployment.outputs.page_url }}
     steps:
       - id: deployment
-        uses: actions/deploy-pages@v4
+        uses: actions/deploy-pages@v5