Bump the dev-deps group with 2 updates

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

Updates `mypy` to 1.19.0
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.18.1...v1.19.0)

Updates `coverage` to 7.12.0
- [Release notes](https://github.com/coveragepy/coveragepy/releases)
- [Changelog](https://github.com/coveragepy/coveragepy/blob/main/CHANGES.rst)
- [Commits](coveragepy/coveragepy@7.11.0...7.12.0)

---
updated-dependencies:
- dependency-name: mypy
  dependency-version: 1.19.0
  dependency-type: direct:development
  dependency-group: dev-deps
- dependency-name: coverage
  dependency-version: 7.12.0
  dependency-type: direct:development
  dependency-group: dev-deps
...

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

Author: dependabot[bot]

pyproject.toml

@@ -91,15 +91,15 @@ lint = [
     "pylint==4.0.*",
     "ruff==0.14.*",
     "black==25.11.*",
-    "mypy==1.18.*",
+    "mypy==1.19.*",
 ]
 test = [
     "pytest==9.0.*",
     "pytest-timeout==2.4.*",
     "pytest-modern==0.7.*;platform_system!='Windows'",
     "coveralls==4.0.*",
     "pytest-cov==7.0.*",
-    "coverage==7.11.*",
+    "coverage==7.12.*",
     "hypothesis==6.*",
     "parameterized==0.9.*",
 ]