chore: bump the dev-dependencies group across 1 directory with 3 updates

Bumps the dev-dependencies group with 3 updates in the / directory: [pytest-cov](https://github.com/pytest-dev/pytest-cov), [mypy](https://github.com/python/mypy) and [ruff](https://github.com/astral-sh/ruff).


Updates `pytest-cov` from 7.0.0 to 7.1.0
- [Changelog](https://github.com/pytest-dev/pytest-cov/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-cov@v7.0.0...v7.1.0)

Updates `mypy` from 1.19.1 to 1.20.0
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.19.1...v1.20.0)

Updates `ruff` from 0.15.7 to 0.15.9
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.15.7...0.15.9)

---
updated-dependencies:
- dependency-name: pytest-cov
  dependency-version: 7.1.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: dev-dependencies
- dependency-name: mypy
  dependency-version: 1.20.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: dev-dependencies
- dependency-name: ruff
  dependency-version: 0.15.9
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: dev-dependencies
...

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

Author: dependabot[bot]

pyproject.toml

@@ -42,9 +42,9 @@ docs = [
 dev = [
     {include-group = "docs"},
     "pytest==9.0.2",
-    "pytest-cov==7.0.0",
-    "mypy==1.19.1",
-    "ruff==0.15.7",
+    "pytest-cov==7.1.0",
+    "mypy==1.20.0",
+    "ruff==0.15.9",
     "pre-commit==4.5.1",
     "nbstripout==0.9.1",
 ]