editors/zed: Update to 0.226.4

Changelog:

• https://github.com/zed-industries/zed/releases/tag/v0.225.12
• https://github.com/zed-industries/zed/releases/tag/v0.225.13
• https://github.com/zed-industries/zed/releases/tag/v0.226.4

Reported by: GitHub (watch releases)