editors/zed: Update to 0.221.5

Changelog:

• https://github.com/zed-industries/zed/releases/tag/v0.220.2
• https://github.com/zed-industries/zed/releases/tag/v0.220.3
• https://github.com/zed-industries/zed/releases/tag/v0.220.5
• https://github.com/zed-industries/zed/releases/tag/v0.220.6
• https://github.com/zed-industries/zed/releases/tag/v0.220.7
• https://github.com/zed-industries/zed/releases/tag/v0.221.4
• https://github.com/zed-industries/zed/releases/tag/v0.221.5

Reported by: GitHub (watch releases)