Bump update notification size back up (#3047)

Regressed:
<img width="422" alt="CleanShot 2023-09-27 at 11 07 37@2x"
src="https://github.com/zed-industries/zed/assets/30666851/636d7bec-4518-45e6-87bd-84b45dda28e1">

Fixed:
<img width="424" alt="CleanShot 2023-09-27 at 11 04 13@2x"
src="https://github.com/zed-industries/zed/assets/30666851/186a1d49-4daf-4211-891a-dacfd1144311">

Release Notes:

- N/A
d671a8a21dJulia committed on 9/27/2023, 3:25:16 PM· committed by GitHubparents6ccaf556b88ac9
1 file changedLine totals unavailable