MR: Pending <!-- NOTE: For context on MR heading, see: https://handbook.gitlab.com/handbook/engineering/development/dev/create/remote-development/index.html#relationship-of-issues-to-mrs --> ## Description Convert from `attr_encrypted` to `encrypted` to comply with `Gitlab/Rails/AttrEncrypted` rubocop rule. See https://docs.gitlab.com/development/migration_style_guide/#encrypted-attributes As a [user or stakeholder], I want [goal or objective] so that [reason or benefit]. ## Acceptance criteria - [ ] Convert `ee/app/models/remote_development/workspace_variable.rb` to use `encrypted` ## Implementation plan TODO: Fill out or delete (optional) [Provide a high-level plan for implementation of this issue, including relevant technical and/or design details.] <!-- NOTE: Feel free to expand with more sections and headers as needed --> <!-- DO NOT TOUCH BELOW -->