style(rubocop): fix all safe auto correctable offenses

api/authenticator.rb

@@ -1,19 +1,19 @@
 authenticator :server do
   friendly_name "Server Authenticator"
-  header "X-Server-API-Key", "The API token for a server that you wish to authenticate with.", :example => 'f29a45f0d4e1744ebaee'
-  error 'InvalidServerAPIKey', "The API token provided in X-Server-API-Key was not valid.", :attributes => {:token => "The token that was looked up"}
-  error 'ServerSuspended', "The mail server has been suspended"
+  header "X-Server-API-Key", "The API token for a server that you wish to authenticate with.", example: "f29a45f0d4e1744ebaee"
+  error "InvalidServerAPIKey", "The API token provided in X-Server-API-Key was not valid.", attributes: { token: "The token that was looked up" }
+  error "ServerSuspended", "The mail server has been suspended"
   lookup do
-    if key = request.headers['X-Server-API-Key']
-      if credential = Credential.where(:type => 'API', :key => key).first
+    if key = request.headers["X-Server-API-Key"]
+      if credential = Credential.where(type: "API", key: key).first
         if credential.server.suspended?
-          error 'ServerSuspended'
+          error "ServerSuspended"
         else
           credential.use
           credential
         end
       else
-        error 'InvalidServerAPIKey', :token => key
+        error "InvalidServerAPIKey", token: key
       end
     end
   end