Update aiofile requirement from ==3.8.* to ==3.9.* in /server

Updates the requirements on [aiofile](https://github.com/mosquito/aiofile) to permit the latest version.
- [Commits](https://github.com/mosquito/aiofile/commits)

---
updated-dependencies:
- dependency-name: aiofile
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

server/requirements.txt

@@ -1,5 +1,5 @@
 # prod
-aiofile==3.8.*
+aiofile==3.9.*
 aiohttp==3.10.10
 beautifulsoup4==4.12.*
 celery==5.4.*