Update development dependencies

Appraisals

@@ -8,7 +8,7 @@
 # > https://github.com/thoughtbot/appraisal
 
 appraise "ar-4.2" do
-  gem "activerecord", "~> 4.2.9"
+  gem "activerecord", "~> 4.2.10"
 end
 
 appraise "ar-5.0" do

gemfiles/ar_4.2.gemfile

@@ -2,6 +2,6 @@
 
 source "https://rubygems.org"
 
-gem "activerecord", "~> 4.2.9"
+gem "activerecord", "~> 4.2.10"
 
 gemspec path: "../"

paper_trail.gemspec

@@ -29,22 +29,22 @@ has been destroyed.
   s.add_dependency "activerecord", [">= 4.2", "< 5.2"]
   s.add_dependency "request_store", "~> 1.1"
 
-  s.add_development_dependency "appraisal", "~> 2.1"
-  s.add_development_dependency "rake", "~> 12.0"
-  s.add_development_dependency "ffaker", "~> 2.5"
+  s.add_development_dependency "appraisal", "~> 2.2"
+  s.add_development_dependency "rake", "~> 12.1"
+  s.add_development_dependency "ffaker", "~> 2.7"
 
   # Why `railties`? Possibly used by `spec/dummy_app` boot up?
   s.add_development_dependency "railties", [">= 4.2", "< 5.2"]
 
   s.add_development_dependency "rack-test", "~> 0.6.3"
-  s.add_development_dependency "rspec-rails", "~> 3.5"
-  s.add_development_dependency "generator_spec", "~> 0.9.3"
-  s.add_development_dependency "database_cleaner", "~> 1.2"
-  s.add_development_dependency "pry-byebug", "~> 3.4"
+  s.add_development_dependency "rspec-rails", "~> 3.7"
+  s.add_development_dependency "generator_spec", "~> 0.9.4"
+  s.add_development_dependency "database_cleaner", "~> 1.6"
+  s.add_development_dependency "pry-byebug", "~> 3.5"
   s.add_development_dependency "rubocop", "0.50.0"
   s.add_development_dependency "rubocop-rspec", "~> 1.18.0"
-  s.add_development_dependency "timecop", "~> 0.8.0"
-  s.add_development_dependency "sqlite3", "~> 1.2"
+  s.add_development_dependency "timecop", "~> 0.9.1"
+  s.add_development_dependency "sqlite3", "~> 1.3"
   s.add_development_dependency "pg", "~> 0.21.0"
-  s.add_development_dependency "mysql2", "~> 0.4.2"
+  s.add_development_dependency "mysql2", "~> 0.4.9"
 end