Restore ruby 2.5 compatibility

.rubocop.yml

@@ -6,7 +6,7 @@ require:
   - rubocop-rails
 
 AllCops:
-  TargetRubyVersion: 2.7
+  TargetRubyVersion: 2.5
   NewCops: enable
   Exclude:
     - 'vendor/**/*'

config/initializers/oauth.rb

@@ -35,12 +35,12 @@ module OpenStreetMap
     module ClassMethods
       def included(controller)
         controller.class_eval do
-          def self.before_filter(...)
-            before_action(...)
+          def self.before_filter(*names, &blk)
+            before_action(*names, &blk)
           end
 
-          def self.skip_before_filter(...)
-            skip_before_action(...)
+          def self.skip_before_filter(*names, &blk)
+            skip_before_action(*names, &blk)
           end
         end