Upgrade GitHub Actions to v3 for checkout and cache

Author: devros42

.github/workflows/build.yml

@@ -18,13 +18,13 @@ jobs:
     steps:
       # Check out code
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       # This is a separate action that sets up buildx runner
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v1
       # So now you can use Actions' own caching!
       - name: Cache Docker layers
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         with:
           path: /tmp/.buildx-cache
           key: ${{ runner.os }}-buildx-${{ github.sha }}