Drop support of Ruby 3.0 and Rails 6.1

.github/workflows/ci.yml

@@ -35,12 +35,10 @@ jobs:
           - '3.3'
           - '3.2'
           - '3.1'
-          - '3.0'
           - 'head'
         rails:
           - rails_7.1.3
           - rails_7.0.8
-          - rails_6.1.7
 
     env: # $BUNDLE_GEMFILE must be set at the job level, so it is set for all steps
       BUNDLE_GEMFILE: ${{ github.workspace }}/gemfiles/${{ matrix.rails }}.gemfile

Appraisals

@@ -1,7 +1,6 @@
 # frozen_string_literal: true
 
 RAILS_VERSIONS = %w[
-  6.1.7
   7.0.8
   7.1.3
 ].freeze
@@ -11,18 +10,6 @@ RAILS_VERSIONS.each do |version|
     gem 'rails', version
 
     case version
-    when "6.1.7"
-      # Fix: LoadError: cannot load such file -- base64
-      install_if '-> { Gem::Version.new(RUBY_VERSION) >= Gem::Version.new("3.3.0") }' do
-        gem "base64"
-        gem "bigdecimal"
-        gem "mutex_m"
-        gem "drb"
-        gem "logger"
-        gem "pstore"
-        gem "ostruct"
-      end
-
     when "7.0.8"
       # Fix: LoadError: cannot load such file -- base64
       install_if '-> { Gem::Version.new(RUBY_VERSION) >= Gem::Version.new("3.3.0") }' do

health_monitor.gemspec

@@ -12,10 +12,10 @@ Gem::Specification.new do |s|
   s.summary     = 'Health monitoring Rails plug-in, which checks various services (db, cache, sidekiq, redis, etc.)'
   s.license     = 'MIT'
 
-  s.required_ruby_version = '>= 3.0.0'
+  s.required_ruby_version = '>= 3.1.0'
 
   s.files = `git ls-files`.split("\n")
 
-  s.add_dependency 'rails', '>= 6.1'
+  s.add_dependency 'rails', '>= 7.0'
   s.add_dependency 'zeitwerk'
 end