Update GitHub Actions workflows to use latest action versions

Author: Ekwuno

.github/workflows/deploy-gallery.yml

@@ -34,8 +34,8 @@ jobs:
       name: github-pages
       url: ${{ steps.deployment.outputs.page_url }}
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
+      - uses: actions/checkout@v7
+      - uses: actions/setup-node@v7
         with:
           node-version: 20
           cache: npm
@@ -46,9 +46,9 @@ jobs:
       - name: Build site
         run: npm run build
         working-directory: site
-      - uses: actions/configure-pages@v5
-      - uses: actions/upload-pages-artifact@v3
+      - uses: actions/configure-pages@v6
+      - uses: actions/upload-pages-artifact@v5
         with:
           path: site/dist
       - id: deployment
-        uses: actions/deploy-pages@v4
+        uses: actions/deploy-pages@v5

.github/workflows/validate-examples.yml

@@ -13,8 +13,8 @@ jobs:
   validate:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
+      - uses: actions/checkout@v7
+      - uses: actions/setup-node@v7
         with:
           node-version: 20
       - name: Validate example metadata and README index