Allow Netty 4.2 updates for this project

Author: Donnerbart

renovate.json5

@@ -12,4 +12,15 @@
     addLabels: [
         'edge-team',
     ],
+    packageRules: [
+        {
+            description: 'This project is already migrated to Netty 4.2 - we have to override the global rule to enable automatic updates',
+            matchPackageNames: [
+                'io.netty:*'
+            ],
+            allowedVersions: '>=4.2',
+            groupName: 'non-major netty dependencies',
+            groupSlug: 'non-major-netty'
+        },
+    ],
 }