Bump pytest from 8.4.2 to 9.0.0 in /src (#4265)

Bumps [pytest](https://github.com/pytest-dev/pytest) from 8.4.2 to 9.0.0.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@8.4.2...9.0.0)

---
updated-dependencies:
- dependency-name: pytest
  dependency-version: 9.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

src/requirements.txt

@@ -1,7 +1,7 @@
 flask==3.1.2
 flask-talisman==1.1.0
 gunicorn==23.0.0
-pytest==8.4.2
+pytest==9.0.0
 pytest-watch==4.2.0
 pytest-cov==7.0.0
 sqlfluff==3.5.0