⬆️ Bump pymongo from 3.12.0 to 4.6.3 in /server

Bumps [pymongo](https://github.com/mongodb/mongo-python-driver) from 3.12.0 to 4.6.3.
- [Release notes](https://github.com/mongodb/mongo-python-driver/releases)
- [Changelog](https://github.com/mongodb/mongo-python-driver/blob/master/doc/changelog.rst)
- [Commits](mongodb/mongo-python-driver@3.12.0...4.6.3)

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

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

server/requirements.txt

@@ -17,7 +17,7 @@ itypes==1.2.0
 psycopg2==2.9.1
 psycopg2-binary==2.9.1
 pyjwt==2.4.0
-pymongo==3.12.0
+pymongo==4.6.3
 pytest==6.2.5
 python-dotenv==0.19.0
 pytz==2021.1