Update pytest-mock requirement from ~=3.7.0 to ~=3.8.1

Updates the requirements on [pytest-mock](https://github.com/pytest-dev/pytest-mock) to permit the latest version.
- [Release notes](https://github.com/pytest-dev/pytest-mock/releases)
- [Changelog](https://github.com/pytest-dev/pytest-mock/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-mock@v3.7.0...v3.8.1)

---
updated-dependencies:
- dependency-name: pytest-mock
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

requirements_test.txt

@@ -53,7 +53,7 @@ jax[cpu]==0.3.13
 # other
 pytest~=7.1.2
 pytest-flake8~=1.1.1
-pytest-mock~=3.7.0
+pytest-mock~=3.8.1
 pytest-cov~=3.0.0
 codecov~=2.1.12
 requests~=2.28.0