Bump pymongo from 4.0.1 to 4.6.3

Bumps [pymongo](https://github.com/mongodb/mongo-python-driver) from 4.0.1 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@4.0.1...4.6.3)

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

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

requirements.txt

@@ -3,7 +3,7 @@ isort==4.3.4
 lazy-object-proxy==1.3.1
 mccabe==0.6.1
 pyactiveresource==2.2.2
-pymongo==4.0.1
+pymongo==4.6.3
 PyYAML==6.0.1
 ShopifyAPI==12.3.0
 six==1.11.0