chore: simplify renovate config to rely on auto-discovery

Drop the generate-renovate.sh generator and explicit fileMatch lists.
Renovate auto-discovers docker-compose, values.yaml and Chart.yaml via
the docker-compose, helm-values and helmv3 managers. Use helmv3 (not
helm-requirements) for Chart.yaml dependencies (Helm v3).

.pre-commit-config.yaml

@@ -6,11 +6,6 @@ repos:
         entry: .pre-commit-sops.sh
         language: script
         pass_filenames: true
-      - id: generate-renovate
-        name: generate renovate
-        entry: generate-renovate.sh
-        language: script
-        pass_filenames: false
       - id: generate-docker-swarmcd
         name: generate docker swarmcd
         entry: generate-docker-swarmcd.sh