Bump pymongo from 2.7.2 to 4.6.3 in /test/acceptance

Bumps [pymongo](https://github.com/mongodb/mongo-python-driver) from 2.7.2 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@2.7.2...4.6.3)

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

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

test/acceptance/requirements.txt

@@ -3,6 +3,6 @@ lettuce==0.2.20
 requests==2.31.0
 xmltodict==0.9.2
 termcolor==1.1.0
-pymongo==2.7.2
+pymongo==4.6.3
 fabric==1.10.1
 git+https://github.com/telefonicaid/lettuce-tools.git#egg=lettuce_tools