ci: use setup-go v4 (#36)

Author: unknwon

.github/workflows/go.yml

@@ -22,9 +22,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Run golangci-lint
-        uses: golangci/golangci-lint-action@v2
+        uses: golangci/golangci-lint-action@v3
         with:
           version: latest
           args: --timeout=30m
@@ -33,16 +33,16 @@ jobs:
     name: Test
     strategy:
       matrix:
-        go-version: [ 1.19.x, 1.20.x ]
+        go-version: [ 1.20.x, 1.21.x ]
         platform: [ ubuntu-latest, macos-latest, windows-latest ]
     runs-on: ${{ matrix.platform }}
     steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
       - name: Install Go
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@v4
         with:
           go-version: ${{ matrix.go-version }}
-      - name: Checkout code
-        uses: actions/checkout@v2
       - name: Run tests with coverage
         run: go test -shuffle=on -v -race -coverprofile=coverage -covermode=atomic ./...
       - name: Upload coverage report to Codecov