fix(helm): add packageRule for helm/helm

helm.json

@@ -16,12 +16,10 @@
     {
       "addLabels": [
         "renovate/automerge",
-        "renovate/golang"
+        "renovate/helm"
       ],
       "automerge": true,
       "enabled": true,
-      "groupName": "helm",
-      "groupSlug": "helm",
       "matchManagers": [
         "helm"
       ],
@@ -30,10 +28,29 @@
         "patch"
       ]
     },
+    {
+      "addLabels": [
+        "renovate/automerge",
+        "renovate/helm"
+      ],
+      "automerge": true,
+      "enabled": true,
+      "matchDatasources": [
+        "github-tags",
+        "github-releases"
+      ],
+      "matchPackageNames": [
+        "helm/helm"
+      ],
+      "matchUpdateTypes": [
+        "minor",
+        "patch"
+      ]
+    },
     {
       "automerge": true,
       "groupName": "Update helm plugin 'unittest'",
-      "matchDepNames": [
+      "matchPackageNames": [
         "helm-unittest/helm-unittest"
       ],
       "matchUpdateTypes": [