build(deps): update ansible-core requirement

Updates the requirements on [ansible-core](https://github.com/ansible/ansible) to permit the latest version.
- [Release notes](https://github.com/ansible/ansible/releases)
- [Commits](ansible/ansible@v2.18.7...v2.20.0)

---
updated-dependencies:
- dependency-name: ansible-core
  dependency-version: 2.20.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

ansible/requirements.txt

@@ -1,2 +1,2 @@
-ansible-core>=2.18.7,<2.20
+ansible-core>=2.18.7,<2.21
 ansible-lint>=25.6.1,<26