Bump ansible-core from 2.15.2 to 2.15.8

Bumps [ansible-core](https://github.com/ansible/ansible) from 2.15.2 to 2.15.8.
- [Release notes](https://github.com/ansible/ansible/releases)
- [Commits](ansible/ansible@v2.15.2...v2.15.8)

---
updated-dependencies:
- dependency-name: ansible-core
  dependency-type: indirect
...

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

test-requirements.txt

@@ -8,7 +8,7 @@ ansible-compat==4.1.5
     # via
     #   ansible-lint
     #   molecule
-ansible-core==2.15.2
+ansible-core==2.15.8
     # via
     #   ansible-compat
     #   ansible-lint