build: bump the python-development-updates group across 1 directory with 3 updates

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


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 `ruff` from 0.14.7 to 0.15.7
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.14.7...0.15.7)

Updates `mypy` from 1.19.0 to 1.19.1
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.19.0...v1.19.1)

---
updated-dependencies:
- dependency-name: pytest-cov
  dependency-version: 7.1.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: python-development-updates
- dependency-name: ruff
  dependency-version: 0.15.7
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: python-development-updates
- dependency-name: mypy
  dependency-version: 1.19.1
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: python-development-updates
...

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

Author: dependabot[bot]

pyproject.toml

@@ -49,15 +49,15 @@ deepset-cloud = "deepset_cloud_sdk.cli:run_packaged"
 
 [dependency-groups]
 test = [
-  "pytest-cov==7.0.0",
+  "pytest-cov==7.1.0",
   "pytest==8.4.2",
   "pytest-asyncio==1.2.0",
   "haystack-ai>=2.13.2",    # only for testing
   "respx==0.22.0",
 ]
 code-quality = [
-  "ruff==0.14.7",
-  "mypy==1.19.0",
+  "ruff==0.15.7",
+  "mypy==1.19.1",
   "pre-commit==4.3.0",
   "types-aiofiles==25.1.0.20251011",
   "types-tabulate==0.9.0.20241207",