matrix-dendrite: switch to modern community.docker docker_image modules

Replaces `community.docker.docker_image` with the modern
`docker_image_pull` module. Drops the `ansible_version` compatibility
ladder and the now-redundant `_container_image_force_pull` variable
(the new pull module handles registry refresh natively via `pull: always`).

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/5191.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

roles/custom/matrix-dendrite/defaults/main.yml

@@ -30,7 +30,6 @@ matrix_dendrite_container_image_registry_prefix_upstream: "{{ matrix_dendrite_co
 matrix_dendrite_container_image_registry_prefix_upstream_default: docker.io/
 # renovate: datasource=docker depName=matrixdotorg/dendrite-monolith
 matrix_dendrite_container_image_tag: "v0.15.2"
-matrix_dendrite_container_image_force_pull: "{{ matrix_dendrite_container_image.endswith(':latest') }}"
 
 matrix_dendrite_base_path: "{{ matrix_base_data_path }}/dendrite"
 matrix_dendrite_config_dir_path: "{{ matrix_dendrite_base_path }}/config"

roles/custom/matrix-dendrite/tasks/setup_install.yml

@@ -49,11 +49,9 @@
   when: "not local_path_media_store_stat.failed and not local_path_media_store_stat.stat.exists"
 
 - name: Ensure Dendrite Docker image is pulled
-  community.docker.docker_image:
+  community.docker.docker_image_pull:
     name: "{{ matrix_dendrite_container_image }}"
-    source: "{{ 'pull' if ansible_version.major > 2 or ansible_version.minor > 7 else omit }}"
-    force_source: "{{ matrix_dendrite_container_image_force_pull if ansible_version.major > 2 or ansible_version.minor >= 8 else omit }}"
-    force: "{{ omit if ansible_version.major > 2 or ansible_version.minor >= 8 else matrix_dendrite_container_image_force_pull }}"
+    pull: always
   when: "not matrix_dendrite_container_image_self_build | bool"
   register: matrix_dendrite_container_image_pull_result
   retries: "{{ devture_playbook_help_container_retries_count }}"

roles/custom/matrix-dendrite/tasks/validate_config.yml

@@ -43,6 +43,7 @@
     - {'old': 'matrix_dendrite_docker_image_registry_prefix_upstream_default', 'new': 'matrix_dendrite_container_image_registry_prefix_upstream_default'}
     - {'old': 'matrix_dendrite_docker_image_tag', 'new': 'matrix_dendrite_container_image_tag'}
     - {'old': 'matrix_dendrite_docker_src_files_path', 'new': 'matrix_dendrite_container_src_files_path'}
+    - {'old': 'matrix_dendrite_container_image_force_pull', 'new': '<removed> (the new community.docker.docker_image_pull module handles this natively)'}
 
 - name: Fail if required Dendrite settings not defined
   ansible.builtin.fail: