Bump tomlkit from 0.7.2 to 0.12.3

Bumps [tomlkit](https://github.com/sdispater/tomlkit) from 0.7.2 to 0.12.3.
- [Release notes](https://github.com/sdispater/tomlkit/releases)
- [Changelog](https://github.com/sdispater/tomlkit/blob/master/CHANGELOG.md)
- [Commits](python-poetry/tomlkit@0.7.2...0.12.3)

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

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

requirements.txt

@@ -46,7 +46,7 @@ rfc3986==2.0.0
 shellingham==1.4.0
 six==1.15.0
 termcolor==1.1.0
-tomlkit==0.7.2
+tomlkit==0.12.3
 tqdm==4.63.0
 twine==3.8.0
 typing-extensions==3.10.0.2