Bump pymongo from 3.12.3 to 4.2.0

Bumps [pymongo](https://github.com/mongodb/mongo-python-driver) from 3.12.3 to 4.2.0.
- [Release notes](https://github.com/mongodb/mongo-python-driver/releases)
- [Changelog](https://github.com/mongodb/mongo-python-driver/blob/master/doc/changelog.rst)
- [Commits](https://github.com/mongodb/mongo-python-driver/compare/3.12.3...4.2.0)

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

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

requirements.txt

@@ -18,7 +18,7 @@ lxml==4.9.1; python_version >= "2.7" and python_full_version < "3.0.0" or python
 prettyconf==2.2.1
 pyaes==1.6.1; python_version >= "3.6" and python_version < "4.0"
 pykeyboard==0.1.5
-pymongo==3.12.3
+pymongo==4.2.0
 pyrogram==2.0.57; python_version >= "3.8"
 pysocks==1.7.1; python_version >= "3.7" and python_full_version < "3.0.0" and python_version < "4.0" or python_version >= "3.7" and python_version < "4.0" and python_full_version >= "3.4.0"
 python-dateutil==2.8.2; (python_version >= "2.7" and python_full_version < "3.0.0") or (python_full_version >= "3.3.0")