chore(deps): bump pytest from 7.2.0 to 9.0.3 in /test/unit/v1beta1

Bumps [pytest](https://github.com/pytest-dev/pytest) from 7.2.0 to 9.0.3.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@7.2.0...9.0.3)

---
updated-dependencies:
- dependency-name: pytest
  dependency-version: 9.0.3
  dependency-type: direct:production
...

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

Author: dependabot[bot]

test/unit/v1beta1/requirements.txt

@@ -1,4 +1,4 @@
 grpcio-testing==1.64.1
-pytest==7.2.0
+pytest==9.0.3
 tensorboardX==2.6.2.2
 kubeflow-training[huggingface]==1.9.0