copyright update

lib/pleroma/mfa.ex

lib/pleroma/mfa/backup_codes.ex

lib/pleroma/mfa/changeset.ex

lib/pleroma/mfa/settings.ex

lib/pleroma/mfa/token.ex

lib/pleroma/mfa/totp.ex

lib/pleroma/web/auth/totp_authenticator.ex

lib/pleroma/web/oauth/mfa_controller.ex

lib/pleroma/web/oauth/mfa_view.ex

lib/pleroma/web/oauth/token/clean_worker.ex

...a_api/controllers/two_factor_authentication_controller.ex

test/web/auth/pleroma_authenticator_test.exs

test/web/auth/totp_authenticator_test.exs