ci: upgrade GitHub Actions to newer versions

Updated various GitHub Actions used in the CI workflows (build.yml, gh-pages.yml, test.yml) to their latest major versions. This includes actions for checking out code, setting up Go, uploading artifacts, configuring Docker, and deploying to GitHub Pages. The update is part of routine maintenance to ensure compatibility with the latest features and improvements provided by these actions.

.github/workflows/test.yml

@@ -21,10 +21,10 @@ jobs:
       GOARCH: ${{ matrix.arch }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Setup Go
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@v5
         with:
           go-version: '1.21'
 
@@ -70,13 +70,13 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Set up QEMU
-        uses: docker/setup-qemu-action@v2
+        uses: docker/setup-qemu-action@v3
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@v3
       - name: Build and push
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@v5
         with:
           context: .
           platforms: linux/${{ matrix.platform }}
@@ -89,7 +89,7 @@ jobs:
 
       - name: Build and push Hardware
         if: matrix.platform == 'amd64'
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@v5
         with:
           context: .
           file: hardware.Dockerfile