build(deps-dev): update pytest requirement from ~=8.0 to ~=9.0 (#849)

Updates the requirements on [pytest](https://github.com/pytest-dev/pytest) to permit the latest version.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@8.0.0...9.0.0)

---
updated-dependencies:
- dependency-name: pytest
  dependency-version: 9.0.0
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pyproject.toml

@@ -49,7 +49,7 @@ dev = [
     "pytest-console-scripts~=1.4.0",
     "pytest-cov~=7.0",
     "pytest-recording~=0.13",
-    "pytest~=8.0",
+    "pytest~=9.0",
     "recommonmark~=0.7.1",
     "requests-mock~=1.12",
     "ruff==0.14.4",