chore(deps): update suzuki-shunsuke/github-action-renovate-config-validator action to v2 (#147)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

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

@@ -9,6 +9,6 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - name: Validate Renovate config
-        uses: suzuki-shunsuke/github-action-renovate-config-validator@c22827f47f4f4a5364bdba19e1fe36907ef1318e # v1.1.1
+        uses: suzuki-shunsuke/github-action-renovate-config-validator@ee9f69e1f683ed0d08225086482b34fc9abe9300 # v2.1.0
         with:
           config_file_path: renovate.json