chore(deps): Update dependency community.docker to v4 (#510)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

.github/workflows/requirements/requirements_collections.yml

@@ -7,4 +7,4 @@ collections:
   - name: community.crypto
     version: 2.21.1
   - name: community.docker
-    version: 3.11.0
+    version: 4.1.0

README.md

@@ -46,7 +46,7 @@ This will also ensure you are deploying/running this role with a fully tested ve
     - name: community.crypto # Only required if you plan to to test the NGINX Plus Molecule scenario
       version: 2.21.1
     - name: community.docker # Only required if you plan to use Molecule
-      version: 3.11.0
+      version: 4.1.0
   ```
 
 - Instructions on how to install Ansible core can be found in the [Ansible](https://docs.ansible.com/ansible/latest/installation_guide/intro_installation.html#upgrading-ansible-from-version-2-9-and-older-to-version-2-10-or-later) docs.