Bump pytest-cov from 2.10.1 to 2.12.1 (#99)

Bumps [pytest-cov](https://github.com/pytest-dev/pytest-cov) from 2.10.1 to 2.12.1.
- [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@v2.10.1...v2.12.1)

---
updated-dependencies:
- dependency-name: pytest-cov
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

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

Author: dependabot[bot]

poetry.lock

@@ -18,7 +18,7 @@ xmltodict = "^0.12.0"
 [tool.poetry.dev-dependencies]
 requests-mock = "^1.9.2"
 pytest = "^6.1.2"
-pytest-cov = "^2.10.1"
+pytest-cov = "^2.12.1"
 pytest-mypy = "^0.7.0"
 
 [build-system]