Bump aiohttp from 3.9.5 to 3.10.2 in /backend

Bumps [aiohttp](https://github.com/aio-libs/aiohttp) from 3.9.5 to 3.10.2.
- [Release notes](https://github.com/aio-libs/aiohttp/releases)
- [Changelog](https://github.com/aio-libs/aiohttp/blob/master/CHANGES.rst)
- [Commits](aio-libs/aiohttp@v3.9.5...v3.10.2)

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

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

backend/requirements.txt

@@ -11,7 +11,7 @@ python-jose==3.3.0
 passlib[bcrypt]==1.7.4
 
 requests==2.32.2
-aiohttp==3.9.5
+aiohttp==3.10.2
 peewee==3.17.5
 peewee-migrate==1.12.2
 psycopg2-binary==2.9.9