Fix DiscourseCops/NoURIEscapeEncode errors and re-enable

.rubocop.yml

@@ -140,8 +140,6 @@ DiscourseCops/NoChdir:
 
 DiscourseCops/NoURIEscapeEncode:
   Enabled: true
-  Exclude:
-    - 'plugins/**/*'
 
 Style/GlobalVars:
   Enabled: true

lib/twitter_api.rb

@@ -121,7 +121,7 @@ class TwitterApi
 
     def bearer_token_credentials
       Base64.strict_encode64(
-        "#{URI::encode(consumer_key)}:#{URI::encode(consumer_secret)}"
+        "#{UrlHelper.encode_component(consumer_key)}:#{UrlHelper.encode_component(consumer_secret)}"
       )
     end