Fix deprecated static attributes in factories

Static attributes will be removed in FactoryBot 5.0.

Author: myabc

spec/factories/activities.rb

@@ -2,11 +2,11 @@
 
 FactoryBot.define do
   factory :activity do
-    name 'Party!'
-    start_time '2013/12/12 18:00'
-    end_time '2013/12/13 03:00'
-    anytime false
-    location 'Ballroom'
+    name { 'Party!' }
+    start_time { '2013/12/12 18:00' }
+    end_time { '2013/12/13 03:00' }
+    anytime { false }
+    location { 'Ballroom' }
     creator { FactoryBot.create(:user) }
     event { Event.new('Some Conference', Time.zone.parse('2013/12/10 18:00'), Time.zone.parse('2013/12/18 18:00')) }
   end

spec/factories/authentications.rb

@@ -1,7 +1,7 @@
 FactoryBot.define do
   factory :authentication do
     uid { generate(:uid) }
-    provider 'Provider'
+    provider { 'Provider' }
     user
   end
 end

spec/factories/users.rb

@@ -3,6 +3,6 @@
 FactoryBot.define do
   factory :user do
     email { generate(:email) }
-    password 'qweqweqwe'
+    password { 'qweqweqwe' }
   end
 end