Update `merman` tag SHA (#59360)

Closes FR-77.

See
https://github.com/zed-industries/merman/commit/9acc3960f04a7deeb08079d60fa8183f15e8bde1.

Release Notes:

- N/A
c88c83d619Neel committed on 6/16/2026, 12:11:02 PM· committed by GitHubparentc0f4059
2 files changedLine totals unavailable