maintainers/scripts/update.nix: Remove unicode from message and comply with CONTRIBUTING.md

It's not used infrequently and the ascii version is nicer for automatic parsing.
```
git log --grep '->' --oneline --since '2022-01-01' | wc -l
   67791
git log --grep '→' --oneline --since '2022-01-01' | wc -l
    2914
```
This commit is contained in:
Stanisław Pitucha 2023-04-05 11:27:04 +10:00
parent cc5bde4085
commit f42b9fd745

View file

@ -100,7 +100,7 @@ async def commit_changes(name: str, merge_lock: asyncio.Lock, worktree: str, bra
# Git can only handle a single index operation at a time
async with merge_lock:
await check_subprocess('git', 'add', *change['files'], cwd=worktree)
commit_message = '{attrPath}: {oldVersion} {newVersion}'.format(**change)
commit_message = '{attrPath}: {oldVersion} -> {newVersion}'.format(**change)
if 'commitMessage' in change:
commit_message = change['commitMessage']
elif 'commitBody' in change: