What was changed?

• mason.yaml is now configured with https://github.com/monstar-lab-oss/flutter-bricks
• Removed local masons
• 🏃 Did a Run with the latest flutter
• ⬆️ Updated all packages
• ⚠️ Removed packages: jaguar_jwt and rxdart — as it is less used, we don't need it in every projects

Pull Request (PR) Checklist

• PR title includes Jira ticket reference -- if no ticket available create one if this PR is a fix or feat
• Branch name includes Jira ticket reference (parent ticket and sub-task if available), e.g. 'feat/APP-XXX_Some_Feature' or feat/APP-XXX_APP-XXX_Some_Sub_Task or 'fix/APP-XXX_Some_Fix' or 'refactor/Some_Refactoring'
• All PR checks pass and changes under /domain are covered with unit tests
• Jira ticket provides testing infos for QA -- add a comment if needed e.q. for pre-requisites, order of API calls, ...
• When merging this PR the commit message follows conventional-commits, e.g. 'feat(some optional epic): add some feature (APP-XXX) (#XXX)'

Related to other PRs

Notes for PR reviewers