Bump versions of GitHub Actions (#25)

Author: prokawsar

.github/workflows/static.yml

@@ -22,11 +22,11 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/configure-pages@v1
         id: pages
       - name: Install Node.js
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version: 20
           cache: npm