Bump pytest-mock from 1.11.2 to 1.12.1

Bumps [pytest-mock](https://github.com/pytest-dev/pytest-mock) from 1.11.2 to 1.12.1.
- [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@v1.11.2...v1.12.1)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

test-requirements.txt

@@ -42,7 +42,7 @@ pytest-asyncio==0.10.0
 pytest-cov==2.8.1
 pytest-django==3.7.0
 pytest-flake8==1.0.4
-pytest-mock==1.11.2
+pytest-mock==1.12.1
 pytest-mypy==0.4.2
 pytest-sugar==0.9.2
 pytest==5.2.4