Validate renovate config

Signed-off-by: Alexander Brandes <mc.cache@web.de>

Author: NotMyFault

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

@@ -0,0 +1,12 @@
+name: validate-renovate-config
+
+on:
+  pull_request:
+    branches:
+      - master
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+      - uses: suzuki-shunsuke/github-action-renovate-config-validator@c22827f47f4f4a5364bdba19e1fe36907ef1318e # v1.1.1