Bump coverage[toml] from 7.5.2 to 7.5.3

Bumps [coverage[toml]](https://github.com/nedbat/coveragepy) from 7.5.2 to 7.5.3.
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](nedbat/coveragepy@7.5.2...7.5.3)

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

Signed-off-by: dependabot[bot] <support@github.com>

pyproject.toml

@@ -50,7 +50,7 @@ dependencies = [
 # Extras used by developers *of* gbulb are pinned to specific versions to
 # ensure environment consistency.
 dev = [
-    "coverage[toml] == 7.5.2",
+    "coverage[toml] == 7.5.3",
     # Pre-commit 3.6.0 deprecated support for Python 3.8
     "pre-commit == 3.5.0 ; python_version < '3.9'",
     "pre-commit == 3.7.1 ; python_version >= '3.9'",