Fix firefox ppa for ubuntu

roles/firefox/tasks/ppa.yml

@@ -1,17 +1,25 @@
 - become: yes
   block:
+    - name: Gather the package facts
+      ansible.builtin.package_facts:
+        manager: auto
+
     - name: remove snap
       community.general.snap:
         name: firefox
         state: absent
-      when: ansible_facts.packages.firefox[0].version == "1.1snap1-0ubuntu2"
+      when: 
+        - "'firefox' in ansible_facts.packages" 
+        - ansible_facts.packages['firefox'].version == "1:1snap1-0ubuntu2"
 
     - name: remove apt snap wrapper version
       apt:
         state: absent
         pkg:
           - firefox
-      when: ansible_facts.packages.firefox[0].version == "1.1snap1-0ubuntu2"
+      when: 
+        - "'firefox' in ansible_facts.packages" 
+        - ansible_facts.packages['firefox'].version == "1:1snap1-0ubuntu2"
 
     - name: add ppa
       apt_repository:
@@ -28,4 +36,4 @@
         update_cache: yes
         state: latest
         pkg:
-          - firefox
+          - firefox