maint: fix workflow file for the last time

Author: gamebox

.github/workflows/master.yml

@@ -11,12 +11,13 @@ jobs:
         go: ['1.20', '1.21']
         os: [ubuntu-latest, windows-latest, macOS-latest]
     steps:
+      - uses: actions/checkout@v5
       - name: Setup Go environment
         uses: actions/setup-go@v5.0.0
         with:
           check-latest: true
           go-version: ${{ matrix.go }}
           cache-dependency-path: |
             go.sum
-        run: go test -v ./internal/... ./gwirl/...
+      - run: go test -v ./internal/... ./gwirl/...