Add explicit dependent: nil to associations (#28169)

app/models/user.rb

@@ -84,12 +84,12 @@ class User < ApplicationRecord
   belongs_to :role, class_name: 'UserRole', optional: true
   accepts_nested_attributes_for :account
 
-  has_many :applications, class_name: 'Doorkeeper::Application', as: :owner
-  has_many :backups, inverse_of: :user
-  has_many :invites, inverse_of: :user
+  has_many :applications, class_name: 'Doorkeeper::Application', as: :owner, dependent: nil
+  has_many :backups, inverse_of: :user, dependent: nil
+  has_many :invites, inverse_of: :user, dependent: nil
   has_many :markers, inverse_of: :user, dependent: :destroy
   has_many :webauthn_credentials, dependent: :destroy
-  has_many :ips, class_name: 'UserIp', inverse_of: :user
+  has_many :ips, class_name: 'UserIp', inverse_of: :user, dependent: nil
 
   has_one :invite_request, class_name: 'UserInviteRequest', inverse_of: :user, dependent: :destroy
   accepts_nested_attributes_for :invite_request, reject_if: ->(attributes) { attributes['text'].blank? && !Setting.require_invite_text }