Bump coverage from 5.1 to 5.3 (#5031)
Bump coverage from 5.1 to 5.3 (#5031)

Bumps [coverage](https://github.com/nedbat/coveragepy) from 5.1 to 5.3.
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](https://github.com/nedbat/coveragepy/compare/coverage-5.1...coverage-5.3)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>

Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
KeepSafe/aiohttp,KeepSafe/aiohttp,KeepSafe/aiohttp