Update i18n-tasks gem ver to 0.9.20

Gemfile

@@ -63,7 +63,7 @@ group :development, :test do
   gem 'byebug', '~> 9.1.0'
   gem 'factory_bot_rails', '~> 4.8.2'
   gem 'faker', '~> 1.8.7'
-  gem 'i18n-tasks', '~> 0.9.15'
+  gem 'i18n-tasks', '~> 0.9.20'
   gem 'knapsack_pro', '~> 0.53.0'
   gem 'launchy', '~> 2.4.3'
   gem 'letter_opener_web', '~> 1.3.2'

Gemfile.lock

@@ -141,8 +141,7 @@ GEM
       railties (>= 3.2.6, < 5.0)
     diff-lcs (1.3)
     docile (1.1.5)
-    easy_translate (0.5.0)
-      json
+    easy_translate (0.5.1)
       thread
       thread_safe
     email_spec (2.1.1)
@@ -190,10 +189,10 @@ GEM
       socksify
     i18n (0.9.1)
       concurrent-ruby (~> 1.0)
-    i18n-tasks (0.9.19)
+    i18n-tasks (0.9.20)
       activesupport (>= 4.0.2)
       ast (>= 2.1.0)
-      easy_translate (>= 0.5.0)
+      easy_translate (>= 0.5.1)
       erubi
       highline (>= 1.7.3)
       i18n
@@ -524,7 +523,7 @@ DEPENDENCIES
   graphiql-rails (~> 1.4.1)
   graphql (~> 1.7.8)
   groupdate (~> 3.2.0)
-  i18n-tasks (~> 0.9.15)
+  i18n-tasks (~> 0.9.20)
   initialjs-rails (~> 0.2.0.5)
   invisible_captcha (~> 0.10.0)
   jquery-fileupload-rails