Move the repo key to follow the guide.

defaults/main.yml

@@ -1,6 +1,6 @@
 ---
 grafana_repo_key: https://apt.grafana.com/gpg.key
-grafana_repo: "deb [signed-by=/usr/share/keyrings/grafana.key] https://apt.grafana.com stable main"
+grafana_repo: "deb [signed-by=/etc/apt/keyrings/grafana.gpg] https://apt.grafana.com stable main"
 grafana_pkg_state: latest
 grafana_packages:
   - grafana

tasks/main.yml

@@ -16,14 +16,22 @@
   when: grafana_enabled
   tags: [grafana]
   block:
+    - name: Create a directory to store the repo keys
+      ansible.builtin.file:
+        dest: /etc/apt/keyrings
+        state: directory
+        mode: "0755"
+        owner: root
+        group: root
     - name: Install the grafana repo key
       get_url:
         url: "{{ grafana_repo_key }}"
-        dest: /usr/share/keyrings/grafana.key
+        dest: /etc/apt/keyrings/grafana.gpg
         state: present
         owner: root
         group: root
         mode: 0644
+      tags: [grafana, grafana_repo_key]
 
     - name: Install the grafana deb repository
       apt_repository: