Bump the test-and-lint-dependencies group with 2 updates (#912)

Bumps the test-and-lint-dependencies group with 2 updates: [ruff](https://github.com/astral-sh/ruff) and [coverage](https://github.com/nedbat/coveragepy).


Updates `ruff` from 0.7.4 to 0.8.0
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.7.4...0.8.0)

Updates `coverage` from 7.6.7 to 7.6.8
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](nedbat/coveragepy@7.6.7...7.6.8)

---
updated-dependencies:
- dependency-name: ruff
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: test-and-lint-dependencies
- dependency-name: coverage
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: test-and-lint-dependencies
...

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

Author: dependabot[bot]

requirements-lint.txt

@@ -1,2 +1,2 @@
 mypy==1.13.0
-ruff==0.7.4
+ruff==0.8.0

requirements-test.txt

@@ -1,2 +1,2 @@
 # additional test tools
-coverage==7.6.7
+coverage==7.6.8