⬆️ Bump actions/setup-go from 5 to 6 (#39)

Author: dependabot[bot]

.github/workflows/go.yml

@@ -21,7 +21,7 @@ jobs:
       # https://github.com/actions/setup-go
       - name: Use Go ${{ matrix.go_version }}
         timeout-minutes: 3
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v6
         with:
           go-version: ${{ matrix.go_version }}