chore(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@v2.16.0...v2.19.3)

---
updated-dependencies:
- dependency-name: ansible-core
  dependency-version: 2.19.3
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.txt

@@ -1,4 +1,4 @@
-ansible-core>=2.16,<2.18.3
+ansible-core>=2.16,<2.19.4
 graphviz>=0.18,<1
 colour<1
 lxml<7