Bump ansible-core from 2.15.5 to 2.15.9 in /lib

Bumps [ansible-core](https://github.com/ansible/ansible) from 2.15.5 to 2.15.9.
- [Release notes](https://github.com/ansible/ansible/releases)
- [Commits](ansible/ansible@v2.15.5...v2.15.9)

---
updated-dependencies:
- dependency-name: ansible-core
  dependency-type: direct:production
...

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

lib/requirements.txt

@@ -1,4 +1,4 @@
 flake8==6.1.0
-ansible-core==2.15.5
+ansible-core==2.15.9
 ansible-lint==6.21.1
 nose2==0.14.0