Bump coverage from 7.6.8 to 7.6.9

Bumps [coverage](https://github.com/nedbat/coveragepy) from 7.6.8 to 7.6.9.
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](nedbat/coveragepy@7.6.8...7.6.9)

---
updated-dependencies:
- dependency-name: coverage
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

pyproject.toml

@@ -37,7 +37,7 @@ dependencies = [
 [project.optional-dependencies]
 tests = [
     "pytest==8.3.4",
-    "coverage==7.6.8",
+    "coverage==7.6.9",
     "python-keycloak>=3.9.1,<4.0.0",
 ]