net-p2p/readarr: Update to 0.2.1.1915

ChangeLog: https://github.com/Readarr/Readarr/releases/tag/v0.2.1.1915

• Fix translation in RemoveQueueItemModal
• Bump version to 0.2.1
• Add more trace logs related info to bug_report.yml
• Automated API Docs update
• Remove not implemented endpoints from API docs
• Automated API Docs update
• Limit search input to first character matching when only one character is typed
• Remove not implemented endpoints from API docs
• Convert to 'using' declaration in Housekeeping Tasks
• Prevent NullRef when deleting missing backups

PR: 272341
Reported by: michiel@vanbaak.eu (maintainer)