chore: add Pihole to dashy, bump pihole version

roles/portainer_dashy/files/dashy-config.yml

@@ -87,6 +87,9 @@ sections:
       - title: Dash Dot
         icon: hl-dashdot
         url: http://dell:3010
+      - title: Pihole
+        icon: hl-pihole
+        url: http://dell:85/admin
   - name: Media Stack
     items:
       - title: Plex

roles/portainer_pihole/defaults/main.yml

@@ -1,7 +1,7 @@
 ---
 pihole_state: present
 pihole_image: pihole/pihole
-pihole_tag: 2022.09.2
+pihole_tag: 2024.07.0
 pihole_portainer_stack_name: pihole
 pihole_container_name: pihole
 # this variable MUST be set. See the tasks for the expected value.