Update actions/setup-go action to v6

Author: renovate[bot]

.github/workflows/test.yml

@@ -8,7 +8,7 @@ jobs:
         os: [ubuntu-latest]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/setup-go@v5
+      - uses: actions/setup-go@v6
         with:
           go-version: ${{ matrix.go-version }}
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4