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

.github/workflows/test-ruby.yml

@@ -111,7 +111,6 @@ jobs:
       fail-fast: false
       matrix:
         ruby-version:
-          - '3.0'
           - '3.1'
           - '.ruby-version'
           - '3.3'
@@ -187,7 +186,6 @@ jobs:
       fail-fast: false
       matrix:
         ruby-version:
-          - '3.0'
           - '3.1'
           - '.ruby-version'
           - '3.3'
@@ -287,7 +285,6 @@ jobs:
       fail-fast: false
       matrix:
         ruby-version:
-          - '3.0'
           - '3.1'
           - '.ruby-version'
           - '3.3'

.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

Gemfile

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 source 'https://rubygems.org'
-ruby '>= 3.0.0'
+ruby '>= 3.1.0'
 
 gem 'puma', '~> 6.3'
 gem 'rails', '~> 7.1.1'

README.md

@@ -69,7 +69,7 @@ Mastodon acts as an OAuth2 provider, so 3rd party apps can use the REST and Stre
 
 - **PostgreSQL** 12+
 - **Redis** 4+
-- **Ruby** 3.0+
+- **Ruby** 3.1+
 - **Node.js** 16+
 
 The repository includes deployment configurations for **Docker and docker-compose** as well as specific platforms like **Heroku**, **Scalingo**, and **Nanobox**. For Helm charts, reference the [mastodon/chart repository](https://github.com/mastodon/chart). The [**standalone** installation guide](https://docs.joinmastodon.org/admin/install/) is available in the documentation.