Update coverage[toml] requirement from ~=7.6 to ~=7.8 (#289)

Updates the requirements on [coverage[toml]](https://github.com/nedbat/coveragepy) to permit the latest version.
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](coveragepy/coveragepy@7.6.0...7.8.0)

---
updated-dependencies:
- dependency-name: coverage[toml]
  dependency-type: direct:development
...

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

Author: dependabot[bot]

requirements-dev.txt

@@ -3,7 +3,7 @@
 # code quality
 autopep8~=2.3
 black[jupyter]~=24.10
-coverage[toml]~=7.6
+coverage[toml]~=7.8
 pip-audit~=2.7
 pycodestyle~=2.12
 pylint~=3.3