Bump pytest-subtests from 0.7.0 to 0.8.0

Bumps [pytest-subtests](https://github.com/pytest-dev/pytest-subtests) from 0.7.0 to 0.8.0.
- [Release notes](https://github.com/pytest-dev/pytest-subtests/releases)
- [Changelog](https://github.com/pytest-dev/pytest-subtests/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-subtests@0.7.0...0.8.0)

---
updated-dependencies:
- dependency-name: pytest-subtests
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements-test.txt

@@ -3,4 +3,4 @@ coverage==6.4
 pytest==7.1.2
 pytest-cov==3.0.0
 pytest-django==4.5.2
-pytest-subtests==0.7.0
+pytest-subtests==0.8.0