Fix some ansible-lint warnings

roles/jitsi/tasks/main.yml

@@ -8,7 +8,7 @@
   docker_container:
     name: 'jitsi_meet_web'
     image: 'jitsi/web:latest'
-    pull: yes
+    pull: true
     container_default_behavior: no_defaults
     published_ports:
       - "{{ localhost_ip }}:{{ ports.jitsi_http }}:80"
@@ -35,7 +35,7 @@
   docker_container:
     name: 'jitsi_meet_prosody'
     image: 'jitsi/prosody:latest'
-    pull: yes
+    pull: true
     container_default_behavior: no_defaults
     env:
       PUBLIC_URL: "{{ jitsi_external_url }}"
@@ -63,7 +63,7 @@
   docker_container:
     name: 'jitsi_meet_jicofo'
     image: 'jitsi/jicofo:latest'
-    pull: yes
+    pull: true
     container_default_behavior: no_defaults
     env:
       TZ: "{{ timezone }}"
@@ -87,7 +87,7 @@
   docker_container:
     name: 'jitsi_meet_jvb'
     image: 'jitsi/jvb:latest'
-    pull: yes
+    pull: true
     container_default_behavior: no_defaults
     published_ports:
       - "{{ ports.jitsi_jvb | default(10000) }}:10000/udp"
@@ -120,5 +120,5 @@
         reverse_proxy http://{{ localhost_ip }}:{{ ports.jitsi_http }}
       }
     validate: 'caddy validate --config %s --adapter caddyfile'
-    backup: yes
+    backup: true
   notify: reload caddy