Update dependency pytest-cov to v2.11.1

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
pytest-cov	==2.10.1 -> ==2.11.1

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Release Notes

pytest-dev/pytest-cov

### [`v2.11.1`](https://togithub.com/pytest-dev/pytest-cov/blob/master/CHANGELOG.rst#​2111-2021-01-20) [Compare Source](https://togithub.com/pytest-dev/pytest-cov/compare/v2.11.0...v2.11.1) - Fixed support for newer setuptools (v42+). Contributed by Michał Górny in `#​451 `\_. ### [`v2.11.0`](https://togithub.com/pytest-dev/pytest-cov/blob/master/CHANGELOG.rst#​2110-2021-01-18) [Compare Source](https://togithub.com/pytest-dev/pytest-cov/compare/v2.10.1...v2.11.0) - Bumped minimum coverage requirement to 5.2.1. This prevents reporting issues. Contributed by Mateus Berardo de Souza Terra in `#​433 `\_. - Improved sample projects (from the `examples `_ directory) to support running `tox -e pyXY`. Now the example configures a suffixed coverage data file, and that makes the cleanup environment unnecessary. Contributed by Ganden Schaffner in `#​435 `_. - Removed the empty `console_scripts` entrypoint that confused some Gentoo build script. I didn't ask why it was so broken cause I didn't want to ruin my day. Contributed by Michał Górny in `#​434 `\_. - Fixed the missing `coverage context `_ when using subprocesses. Contributed by Bernát Gábor in `#​443 `_. - Updated the config section in the docs. Contributed by Pamela McA'Nulty in `#​429 `\_. - Migrated CI to travis-ci.com (from .org).

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