ci(renovate): Activate automerge for common, stable helm charts

renovate.json

@@ -132,6 +132,28 @@
       ],
       "pinDigests": false
     },
+    {
+      "matchDatasources":[
+        "helm"
+      ],
+      "matchPackageNames": [
+        "oauth2-proxy",
+        "ingress-nginx",
+        "kube-prometheus-stack",
+        "forecastle",
+        "kured",
+        "cert-manager",
+        "matrix-synapse",
+        "metrics-server",
+        "uptime-kuma",
+        "harbor"
+      ],
+      "matchUpdateTypes": [
+        "minor",
+        "patch"
+      ],
+      "automerge": true
+    },
     {
       "matchDatasources":[
         "docker"