Bump pytest-cov from 2.11.1 to 2.12.1

Bumps [pytest-cov](https://github.com/pytest-dev/pytest-cov) from 2.11.1 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@v2.11.1...v2.12.1)

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

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

Author: dependabot[bot]

poetry.lock

@@ -20,7 +20,7 @@ psycopg2-binary = "2.8.6"
 py-healthcheck = "1.10.1"
 pytest = "6.2.3"
 pytest-mock = "3.6.1"
-pytest-cov = "2.11.1"
+pytest-cov = "2.12.1"
 python-dateutil = "2.8.1"
 pyyaml = "5.4.1"
 requests = "2.25.1"