Ruby 3.0 support, drop support for Ruby < 2.4

gemfiles/rails_42.gemfile

@@ -7,15 +7,15 @@ gem "railties", "~> 4.2.0"
 
 group :development do
   gem "appraisal", "~> 2.2"
-  gem "pry", "~> 0.10.1"
-  gem "pry-byebug", "~> 3.2.0"
-  gem "sdoc", "~> 0.4.1"
+  gem "pry", "~> 0.13.1"
+  gem "pry-byebug", "~> 3.9.0"
+  gem "sdoc", "~> 2.0.3"
   gem "telegram-bot-types", "~> 0.6.2"
-  gem "rspec", "~> 3.5.0"
-  gem "rspec-its", "~> 1.1.0"
-  gem "rspec-rails", "~> 3.5.0"
+  gem "rspec", "~> 3.10.0"
+  gem "rspec-its", "~> 1.3.0"
+  gem "rspec-rails", "~> 4.0.2"
   gem "rubocop", "~> 0.52.1"
-  gem "coveralls", "~> 0.8.2", require: false
+  gem "coveralls", "~> 0.8.23", require: false
 end
 
 gemspec path: "../"

gemfiles/rails_50.gemfile

@@ -7,15 +7,15 @@ gem "railties", "~> 5.0.0"
 
 group :development do
   gem "appraisal", "~> 2.2"
-  gem "pry", "~> 0.10.1"
-  gem "pry-byebug", "~> 3.2.0"
-  gem "sdoc", "~> 0.4.1"
+  gem "pry", "~> 0.13.1"
+  gem "pry-byebug", "~> 3.9.0"
+  gem "sdoc", "~> 2.0.3"
   gem "telegram-bot-types", "~> 0.6.2"
-  gem "rspec", "~> 3.5.0"
-  gem "rspec-its", "~> 1.1.0"
-  gem "rspec-rails", "~> 3.5.0"
+  gem "rspec", "~> 3.10.0"
+  gem "rspec-its", "~> 1.3.0"
+  gem "rspec-rails", "~> 4.0.2"
   gem "rubocop", "~> 0.52.1"
-  gem "coveralls", "~> 0.8.2", require: false
+  gem "coveralls", "~> 0.8.23", require: false
 end
 
 gemspec path: "../"

gemfiles/rails_51.gemfile

@@ -7,15 +7,15 @@ gem "railties", "~> 5.1.0"
 
 group :development do
   gem "appraisal", "~> 2.2"
-  gem "pry", "~> 0.10.1"
-  gem "pry-byebug", "~> 3.2.0"
-  gem "sdoc", "~> 0.4.1"
+  gem "pry", "~> 0.13.1"
+  gem "pry-byebug", "~> 3.9.0"
+  gem "sdoc", "~> 2.0.3"
   gem "telegram-bot-types", "~> 0.6.2"
-  gem "rspec", "~> 3.5.0"
-  gem "rspec-its", "~> 1.1.0"
-  gem "rspec-rails", "~> 3.5.0"
+  gem "rspec", "~> 3.10.0"
+  gem "rspec-its", "~> 1.3.0"
+  gem "rspec-rails", "~> 4.0.2"
   gem "rubocop", "~> 0.52.1"
-  gem "coveralls", "~> 0.8.2", require: false
+  gem "coveralls", "~> 0.8.23", require: false
 end
 
 gemspec path: "../"

gemfiles/rails_52.gemfile

@@ -7,15 +7,15 @@ gem "railties", "~> 5.2.0"
 
 group :development do
   gem "appraisal", "~> 2.2"
-  gem "pry", "~> 0.10.1"
-  gem "pry-byebug", "~> 3.2.0"
-  gem "sdoc", "~> 0.4.1"
+  gem "pry", "~> 0.13.1"
+  gem "pry-byebug", "~> 3.9.0"
+  gem "sdoc", "~> 2.0.3"
   gem "telegram-bot-types", "~> 0.6.2"
-  gem "rspec", "~> 3.5.0"
-  gem "rspec-its", "~> 1.1.0"
-  gem "rspec-rails", "~> 3.5.0"
+  gem "rspec", "~> 3.10.0"
+  gem "rspec-its", "~> 1.3.0"
+  gem "rspec-rails", "~> 4.0.2"
   gem "rubocop", "~> 0.52.1"
-  gem "coveralls", "~> 0.8.2", require: false
+  gem "coveralls", "~> 0.8.23", require: false
 end
 
 gemspec path: "../"

gemfiles/rails_60.gemfile

@@ -7,15 +7,15 @@ gem "railties", "~> 6.0.0"
 
 group :development do
   gem "appraisal", "~> 2.2"
-  gem "pry", "~> 0.10.1"
-  gem "pry-byebug", "~> 3.2.0"
-  gem "sdoc", "~> 0.4.1"
+  gem "pry", "~> 0.13.1"
+  gem "pry-byebug", "~> 3.9.0"
+  gem "sdoc", "~> 2.0.3"
   gem "telegram-bot-types", "~> 0.6.2"
-  gem "rspec", "~> 3.5.0"
-  gem "rspec-its", "~> 1.1.0"
-  gem "rspec-rails", "~> 3.5.0"
+  gem "rspec", "~> 3.10.0"
+  gem "rspec-its", "~> 1.3.0"
+  gem "rspec-rails", "~> 4.0.2"
   gem "rubocop", "~> 0.52.1"
-  gem "coveralls", "~> 0.8.2", require: false
+  gem "coveralls", "~> 0.8.23", require: false
 end
 
 gemspec path: "../"

gemfiles/rails_61.gemfile

@@ -7,15 +7,15 @@ gem "railties", "~> 6.1.0"
 
 group :development do
   gem "appraisal", "~> 2.2"
-  gem "pry", "~> 0.10.1"
-  gem "pry-byebug", "~> 3.2.0"
-  gem "sdoc", "~> 0.4.1"
+  gem "pry", "~> 0.13.1"
+  gem "pry-byebug", "~> 3.9.0"
+  gem "sdoc", "~> 2.0.3"
   gem "telegram-bot-types", "~> 0.6.2"
-  gem "rspec", "~> 3.5.0"
-  gem "rspec-its", "~> 1.1.0"
-  gem "rspec-rails", "~> 3.5.0"
+  gem "rspec", "~> 3.10.0"
+  gem "rspec-its", "~> 1.3.0"
+  gem "rspec-rails", "~> 4.0.2"
   gem "rubocop", "~> 0.52.1"
-  gem "coveralls", "~> 0.8.2", require: false
+  gem "coveralls", "~> 0.8.23", require: false
 end
 
 gemspec path: "../"