Don't use deprecated way to add apt key

tasks/main.yml

@@ -1,7 +1,9 @@
 ---
 - name: "Opensearch | Add repository key"
-  ansible.builtin.apt_key:
+  ansible.builtin.get_url:
     url: "{{ opensearch_apt_key_url }}"
+    dest: /etc/apt/trusted.gpg.d/opensearch.asc
+    mode: "0644"
 
 - name: "Opensearch | Add repository"
   ansible.builtin.apt_repository:
@@ -58,4 +60,3 @@
     src: update-opensearch-plugins.j2
     dest: "/usr/local/bin/{{ opensearch_plugin_update_script }}"
     mode: "0755"
-