fix: declare the dependency on the collection community.general

On Archlinux ansible.builtin.package resolves to the module pacman, which is shipped by community.general and not by
ansible-core. Without the collection the role fails with "Could not find a matching action for the pacman package
manager", which surfaced in the molecule scenario as soon as only the explicitly declared collections were installed.

Co-authored-by: Copilot <copilot@github.com>

molecule/default/collections.yml

@@ -3,3 +3,4 @@
 collections:
 - name: community.crypto
 - name: community.docker
+- name: community.general