Update mongomock requirement from ==3.23.* to ==4.1.* (#114)

Updates the requirements on [mongomock](https://github.com/mongomock/mongomock) to permit the latest version.
- [Release notes](https://github.com/mongomock/mongomock/releases)
- [Commits](mongomock/mongomock@3.23.0...4.1.2)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements-test.txt

@@ -2,7 +2,7 @@ black==22.3.0
 flake8==4.0.*
 isort==5.10.*
 mock==4.0.3
-mongomock==3.23.*
+mongomock==4.1.*
 moto[server]==2.2.*
 mypy==1.0.1
 pytest==7.4.*