build(deps): update coverage requirement in the dev-dependencies group

Updates the requirements on [coverage](https://github.com/nedbat/coveragepy) to permit the latest version.

Updates `coverage` to 7.6.5
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](nedbat/coveragepy@7.5.4...7.6.5)

---
updated-dependencies:
- dependency-name: coverage
  dependency-type: direct:production
  dependency-group: dev-dependencies
...

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

pyproject.toml

@@ -42,7 +42,7 @@ test = [
   "pytest>=7.4,<=8.3.3",
   "hypothesis>=6.104.2,<=6.118.8",
   "ruff>=0.5.0,<=0.7.3",
-  "coverage>=7.5.4,<=7.6.4",
+  "coverage>=7.5.4,<=7.6.5",
 ]
 
 [build-system]