deps: update actions/setup-go action to v6

| datasource  | package          | from   | to     |
| ----------- | ---------------- | ------ | ------ |
| github-tags | actions/setup-go | v5.6.0 | v6.4.0 |

Author: renovate[bot]

.github/workflows/renovate-config-check.yaml

@@ -29,7 +29,7 @@ jobs:
         args: renovate-config-validator
 
     - name: Set up Go
-      uses: actions/setup-go@d35c59abb061a4a6fb18e82ac0862c26744d6ab5 # v5
+      uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6
       with:
         go-version-file: scripts/renovate-config-check/go.mod