Switch to FactoryBot (including update to 4.11.0)

https://robots.thoughtbot.com/factory_bot

Gemfile

@@ -208,7 +208,7 @@ gem "countable-rails", "~> 0.0.1"
 # for fake data
 gem 'faker'
 # for seeds
-gem 'factory_girl_rails'
+gem 'factory_bot_rails'
 
 # for integrating Stripe payment gateway
 gem 'stripe'

Gemfile.lock

@@ -173,10 +173,10 @@ GEM
     errbase (0.1.0)
     erubis (2.7.0)
     execjs (2.7.0)
-    factory_girl (4.5.0)
+    factory_bot (4.11.0)
       activesupport (>= 3.0.0)
-    factory_girl_rails (4.6.0)
-      factory_girl (~> 4.5.0)
+    factory_bot_rails (4.11.0)
+      factory_bot (~> 4.11.0)
       railties (>= 3.0.0)
     faker (1.9.1)
       i18n (>= 0.7)
@@ -620,7 +620,7 @@ DEPENDENCIES
   devise
   devise_ichain_authenticatable
   dotenv-rails
-  factory_girl_rails
+  factory_bot_rails
   faker
   feature
   font-awesome-rails