Bump ujson from 5.1 to 5.4.0 in /frameworks/Python/aiohttp

Bumps [ujson](https://github.com/ultrajson/ultrajson) from 5.1 to 5.4.0.
- [Release notes](https://github.com/ultrajson/ultrajson/releases)
- [Commits](https://github.com/ultrajson/ultrajson/compare/5.1.0...5.4.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

frameworks/Python/aiohttp/requirements.txt

@@ -5,5 +5,5 @@ gunicorn==20.1
 jinja2==3.0.3
 psycopg2==2.9.2
 SQLAlchemy==1.4.29
-ujson==5.1
+ujson==5.4.0
 uvloop==0.16