Update actions/setup-go action to v6

Author: renovate[bot]

.github/workflows/go-test.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-go@v5
+      - uses: actions/setup-go@v6
         with:
           go-version-file: 'go.mod'
       - run: go test -race ./...