Fix rambox installation

There is no difference between CE and PRO anymore so only one download
is needed.

tasks/rambox.yml

@@ -5,17 +5,11 @@
     name: xz-utils
     state: present
 
-- name: Set Rambox download link to ce
-  ansible.builtin.set_fact:
-    local_system_rambox_download: "https://github.com/ramboxapp/community-edition/releases/download/{{ local_system_ramboxce }}/Rambox-{{ local_system_ramboxce }}-linux-amd64.deb"
-  when: local_system_rambox == "ce"
-
-- name: Set Rambox download link to pro
-  ansible.builtin.set_fact:
-    local_system_rambox_download: https://github.com/ramboxapp/download/releases/download/{{ local_system_ramboxpro }}/RamboxPro-{{ local_system_ramboxpro[1:] }}-linux-x64.deb
-  when: local_system_rambox == "pro"
-
 - name: Download and install Rambox
+  become: true
   ansible.builtin.apt:
-    deb: "{{ local_system_rambox_download }}"
-  when: (ansible_os_family | lower) == "debian"
+    deb: "https://github.com/ramboxapp/download/releases/download/{{ local_system_rambox }}/Rambox-{{ local_system_rambox[1:] }}-linux-x64.deb"
+  when:
+    - local_system_rambox is defined
+    - local_system_rambox is not false
+    - (ansible_os_family | lower) == "debian"