Drop support for Ruby 3.0 (reaching EOL) (#29702)

.rubocop.yml

@@ -14,7 +14,7 @@ require:
   - ./lib/linter/rubocop_middle_dot
 
 AllCops:
-  TargetRubyVersion: 3.0 # Set to minimum supported version of CI
+  TargetRubyVersion: 3.1 # Set to minimum supported version of CI
   DisplayCopNames: true
   DisplayStyleGuide: true
   ExtraDetails: true
@@ -80,6 +80,11 @@ Metrics/CyclomaticComplexity:
 Metrics/ParameterLists:
   CountKeywordArgs: false
 
+# Reason: Prefer seeing a variable name
+# https://docs.rubocop.org/rubocop/cops_naming.html#namingblockforwarding
+Naming/BlockForwarding:
+  EnforcedStyle: explicit
+
 # Reason: Prevailing style is argument file paths
 # https://docs.rubocop.org/rubocop-rails/cops_rails.html#railsfilepath
 Rails/FilePath:
@@ -180,6 +185,7 @@ Style/FormatStringToken:
 # https://docs.rubocop.org/rubocop/cops_style.html#stylehashsyntax
 Style/HashSyntax:
   EnforcedStyle: ruby19_no_mixed_keys
+  EnforcedShorthandSyntax: either
 
 # Reason:
 # https://docs.rubocop.org/rubocop/cops_style.html#stylenumericliterals