Bump coverage[toml] from 6.1 to 6.1.1

Bumps [coverage[toml]](https://github.com/nedbat/coveragepy) from 6.1 to 6.1.1.
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](nedbat/coveragepy@6.1...6.1.1)

---
updated-dependencies:
- dependency-name: coverage[toml]
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

requirements-dev.txt

@@ -11,4 +11,4 @@ wheel==0.37.0
 setuptools==58.3.0
 twine==3.4.2
 pillow==8.4.0
-coverage[toml]==6.1
+coverage[toml]==6.1.1