.rubocop.yml in grumlin-1.0.4 vs .rubocop.yml in grumlin-1.1.0

- old
+ new

@@ -1,6 +1,6 @@
 AllCops:
-  TargetRubyVersion: 2.7
+  TargetRubyVersion: 3.0
   NewCops: enable
   SuggestExtensions: false
 
 require:
   - rubocop-performance