chore: upgrade GitHub actions to v6 for checkout and setup-node

Author: so-kaushal

.github/workflows/ci.yml

@@ -19,9 +19,9 @@ jobs:
         # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v6
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v6
         with:
           node-version: ${{ matrix.node-version }}
           cache: 'npm'