Bump pytest-cov from 2.11.0 to 2.11.1 in /src (#1907)

Bumps [pytest-cov](https://github.com/pytest-dev/pytest-cov) from 2.11.0 to 2.11.1.
- [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@v2.11.0...v2.11.1)

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

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

Author: dependabot[bot]

src/requirements.txt

@@ -3,4 +3,4 @@ flask-talisman==0.7.0
 gunicorn==20.0.4
 pytest==6.2.1
 pytest-watch==4.2.0
-pytest-cov==2.11.0
+pytest-cov==2.11.1