rubocop-all.yml in gitlab-styles-11.0.0 vs rubocop-all.yml in gitlab-styles-13.0.0

@@ -1,7 +1,8 @@
 ---
 AllCops:
-  TargetRubyVersion: 2.6
+  # The oldest supported Ruby version.
+  TargetRubyVersion: 3.1
   # Cop names are not displayed in offense messages by default. Change behavior
   # by overriding DisplayCopNames, or by giving the -D/--display-cop-names
   # option.
   DisplayCopNames: true
   # Style guide URLs are not displayed in offense messages by default. Change