chore: enable auto-merge for crd updates

renovate.json

@@ -1,4 +1,19 @@
 {
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
-  "extends": ["github>thegeeklab/renovate-presets"]
+  "extends": ["github>thegeeklab/renovate-presets"],
+  "packageRules": [
+    {
+      "description": "Automerge CRDs",
+      "groupName": "crds catalog",
+      "matchDatasources": ["regex"],
+      "matchPackageNames": [
+        "projectcalico/calico",
+        "fluxcd/flux2",
+        "cert-manager/cert-manager",
+        "cloudnative-pg/cloudnative-pg"
+      ],
+      "matchUpdateTypes": ["minor", "patch"],
+      "automerge": true
+    }
+  ]
 }