fix: add Gotify hairpin to changedetection services

- Add extra_hosts entry for changedetection service to reach Gotify
- Add extra_hosts entry for sockpuppetbrowser service to reach Gotify
- Resolves internal routing issues for Gotify notifications

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

roles/docker/templates/changedetection-compose.yml.j2

@@ -75,6 +75,8 @@ services:
   #    ports:
   #      - 5000:5000
       restart: unless-stopped
+      extra_hosts:
+        - "{{ subdomains.gotify }}:{{ docker.hairpin_ip }}"
 
      # Used for fetching pages via WebDriver+Chrome where you need Javascript support.
      # Now working on arm64 (needs testing on rPi - tested on Oracle ARM instance)
@@ -104,6 +106,8 @@ services:
             - SCREEN_HEIGHT=1024
             - SCREEN_DEPTH=16
             - MAX_CONCURRENT_CHROME_PROCESSES=10
+        extra_hosts:
+            - "{{ subdomains.gotify }}:{{ docker.hairpin_ip }}"
 
      # Used for fetching pages via Playwright+Chrome where you need Javascript support.
      # Note: Works well but is deprecated, does not fetch full page screenshots (doesnt work with Visual Selector)