fix: update GitHub Actions to use latest versions of upload-pages-artifact and deploy-pages

Author: Wybxc

.github/workflows/examples.yml

@@ -64,7 +64,7 @@ jobs:
           EOF
 
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v2
+        uses: actions/upload-pages-artifact@v4
         with:
           path: 'build/examples'
 
@@ -77,4 +77,4 @@ jobs:
     steps:
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v3
+        uses: actions/deploy-pages@v4