Revert "build: update renovate to update @angular/dev-infra-private as target: patch"

This reverts commit 9dbe4a9.

Author: alan-agius4

renovate.json

@@ -21,15 +21,9 @@
   "packageRules": [
     {
       "packagePatterns": ["^@angular/.*"],
-      "excludePackageNames": ["@angular/dev-infra-private"],
       "groupName": "angular",
       "pinVersions": false
     },
-    {
-      "matchPackageNames": ["@angular/dev-infra-private"],
-      "groupName": "dev-infra",
-      "labels": ["action: merge", "target: patch"]
-    },
     {
       "packagePatterns": ["^@babel/.*"],
       "groupName": "babel",