chore: sync template versions with image updates

Author: github-actions[bot]

library/compose/pihole/template.yaml

@@ -30,9 +30,9 @@ metadata:
     - **GitHub:** https://github.com/pi-hole/pi-hole
 
     '
-  version: 2025.11.1
+  version: 2026.02.0
   author: Christian Lempa
-  date: '2025-12-11'
+  date: '2026-02-18'
   tags:
   - traefik
   - swarm