Update pytest-cov requirement from ~=2.11.1 to ~=2.12.0

Updates the requirements on [pytest-cov](https://github.com/pytest-dev/pytest-cov) to permit the latest version.
- [Release notes](https://github.com/pytest-dev/pytest-cov/releases)
- [Changelog](https://github.com/pytest-dev/pytest-cov/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-cov@v2.11.1...v2.12.0)

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

Author: dependabot[bot]

requirements.txt

@@ -44,7 +44,7 @@ kornia~=0.5.2
 pytest~=6.2.4
 pytest-flake8~=1.0.7
 pytest-mock~=3.6.1
-pytest-cov~=2.11.1
+pytest-cov~=2.12.0
 codecov~=2.1.11
 requests~=2.25.1