Psych::DisallowedClass: Tried to load unspecified class: Gitlab::Color

This was picked up from soft enforcement in Rails 6.1.6.1: !92400 (merged)

https://sentry.gitlab.net/gitlab/gitlabcom/issues/3388980/?referrer=gitlab_plugin

Net::ReadTimeout: Net::ReadTimeout
  lib/gitlab/buffered_io.rb:32:in `readuntil'
    rbuf_fill
  lib/gitlab/http.rb:54:in `perform_request'
    httparty_perform_request(http_method, path, options_with_timeouts) do |fragment|
  app/services/web_hook_service.rb:130:in `make_request'
    Gitlab::HTTP.post(url,
  app/services/web_hook_service.rb:72:in `execute'
    make_request(parsed_url.to_s)
  app/models/hooks/web_hook.rb:75:in `execute'
    WebHookService.new(self, data, hook_name, force: force).execute
...
(177 additional frame(s) were not displayed)

Psych::DisallowedClass: Tried to load unspecified class: Gitlab::Color
  config/initializers/rails_safe_load_yaml_patch.rb:14:in `yaml_load'
    YAML.safe_load(payload, permitted_classes: ActiveRecord::Base.yaml_column_permitted_classes, aliases: true)
  app/models/hooks/web_hook_log.rb:58:in `redact_author_email'
    return unless self.request_data.dig('commit', 'author', 'email').present?
  lib/gitlab/database/load_balancing/connection_proxy.rb:120:in `block in write_using_load_balancer'
    connection.send(...)
  lib/gitlab/database/load_balancing/load_balancer.rb:115:in `block in read_write'
    yield connection
  lib/gitlab/database/load_balancing/load_balancer.rb:191:in `retry_with_backoff'
    return yield
...
(245 additional frame(s) were not displayed)