style(rubocop): Style/HashEachMethods

lib/postal/message_db/statistics.rb

@@ -31,7 +31,7 @@ module Postal
       # Increment all stats counters
       #
       def increment_all(time, field)
-        STATS_GAPS.keys.each do |type|
+        STATS_GAPS.each_key do |type|
           increment_one(type, field, time)
         end
       end

lib/postal/message_inspectors/rspamd.rb

@@ -14,7 +14,7 @@ module Postal
         response = JSON.parse(response.body)
         return unless response["symbols"].is_a?(Hash)
 
-        response["symbols"].values.each do |symbol|
+        response["symbols"].each_value do |symbol|
           next if symbol["description"].blank?
 
           inspection.spam_checks << SpamCheck.new(symbol["name"], symbol["score"], symbol["description"])