Update GitHub workflow

Author: janos

.github/workflows/go.yml

@@ -12,9 +12,9 @@ jobs:
     steps:
 
     - name: Set up Go
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v4
       with:
-        go-version: '1.20'
+        go-version: '1.21.0-rc.2'
 
     - name: Checkout
       uses: actions/checkout@v1
@@ -31,11 +31,12 @@ jobs:
           ${{ runner.OS }}-build-
           ${{ runner.OS }}-
 
-    - name: Lint
-      uses: golangci/golangci-lint-action@v2
-      with:
-        version: v1.52.1
-        args: --timeout 10m
+    # TODO: enable with Go 1.21 final release
+    # - name: Lint
+    #   uses: golangci/golangci-lint-action@v2
+    #   with:
+    #     version: v1.53.3
+    #     args: --timeout 10m
 
     - name: Vet
       if: matrix.os == 'ubuntu-latest'