Add support for pinning mautrix-meta version to a specific commit

We still remain on v0.1.0 for now, even though that's quite old nowadays
and the bridge is moving quickly.

Still, one could now pin to a specific commit like this:

```yml
matrix_mautrix_meta_messenger_version: 682c4d75b0
matrix_mautrix_meta_instagram_version: 682c4d75b0
```

roles/custom/matrix-bridge-mautrix-meta-instagram/defaults/main.yml

@@ -23,8 +23,10 @@ matrix_mautrix_meta_instagram_container_src_files_path: "{{ matrix_mautrix_meta_
 matrix_mautrix_meta_instagram_container_image_self_build: false
 matrix_mautrix_meta_instagram_container_image_self_build_repo: "https://github.com/mautrix/meta.git"
 
-matrix_mautrix_meta_instagram_container_image: "{{ matrix_mautrix_meta_instagram_container_image_name_prefix }}mautrix/meta:{{ matrix_mautrix_meta_instagram_version }}"
+matrix_mautrix_meta_instagram_container_image: "{{ matrix_mautrix_meta_instagram_container_image_name_prefix }}mautrix/meta:{{ matrix_mautrix_meta_instagram_container_image_tag }}"
 matrix_mautrix_meta_instagram_container_image_name_prefix: "{{ 'localhost/' if matrix_mautrix_meta_instagram_container_image_self_build else 'dock.mau.dev/' }}"
+# Prebuilt container images for specific commit hashes are tagged with an architecture suffix (e.g. `HASH-amd64`).
+matrix_mautrix_meta_instagram_container_image_tag: "{{ matrix_mautrix_meta_instagram_version }}{{ ('-' ~ matrix_architecture) if (matrix_mautrix_meta_instagram_version | length == 40) else '' }}"
 matrix_mautrix_meta_instagram_container_image_force_pull: "{{ matrix_mautrix_meta_instagram_container_image.endswith(':latest') }}"
 
 matrix_mautrix_meta_instagram_container_network: ""

roles/custom/matrix-bridge-mautrix-meta-messenger/defaults/main.yml

@@ -23,8 +23,10 @@ matrix_mautrix_meta_messenger_container_src_files_path: "{{ matrix_mautrix_meta_
 matrix_mautrix_meta_messenger_container_image_self_build: false
 matrix_mautrix_meta_messenger_container_image_self_build_repo: "https://github.com/mautrix/meta.git"
 
-matrix_mautrix_meta_messenger_container_image: "{{ matrix_mautrix_meta_messenger_container_image_name_prefix }}mautrix/meta:{{ matrix_mautrix_meta_messenger_version }}"
+matrix_mautrix_meta_messenger_container_image: "{{ matrix_mautrix_meta_messenger_container_image_name_prefix }}mautrix/meta:{{ matrix_mautrix_meta_messenger_container_image_tag }}"
 matrix_mautrix_meta_messenger_container_image_name_prefix: "{{ 'localhost/' if matrix_mautrix_meta_messenger_container_image_self_build else 'dock.mau.dev/' }}"
+# Prebuilt container images for specific commit hashes are tagged with an architecture suffix (e.g. `HASH-amd64`).
+matrix_mautrix_meta_messenger_container_image_tag: "{{ matrix_mautrix_meta_messenger_version }}{{ ('-' ~ matrix_architecture) if (matrix_mautrix_meta_messenger_version | length == 40) else '' }}"
 matrix_mautrix_meta_messenger_container_image_force_pull: "{{ matrix_mautrix_meta_messenger_container_image.endswith(':latest') }}"
 
 matrix_mautrix_meta_messenger_container_network: ""