Bump pymongo from 3.10.1 to 4.0.1

Bumps [pymongo](https://github.com/mongodb/mongo-python-driver) from 3.10.1 to 4.0.1.
- [Release notes](https://github.com/mongodb/mongo-python-driver/releases)
- [Changelog](https://github.com/mongodb/mongo-python-driver/blob/4.0.1/doc/changelog.rst)
- [Commits](mongodb/mongo-python-driver@3.10.1...4.0.1)

---
updated-dependencies:
- dependency-name: pymongo
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

requirements.txt

@@ -1,6 +1,6 @@
 arcus==1.2.10
 celery==5.2.3
-pymongo==3.10.1
+pymongo==4.0.1
 sentry-sdk==0.16.0
 requests==2.21
 click==8.0.3