Bump pytest-mock from 3.2.0 to 3.3.0 (#55)

Bumps [pytest-mock](https://github.com/pytest-dev/pytest-mock) from 3.2.0 to 3.3.0.
- [Release notes](https://github.com/pytest-dev/pytest-mock/releases)
- [Changelog](https://github.com/pytest-dev/pytest-mock/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-mock@v3.2.0...v3.3.0)

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

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

requirements_test.txt

@@ -2,5 +2,5 @@ asynctest==0.13.0
 pytest==6.0.1
 pytest-asyncio==0.14.0
 pytest-cov==2.10.1
-pytest-mock==3.2.0
+pytest-mock==3.3.0
 pytest-timeout==1.4.2