config: fix logos

Author: felbinger

.upptimerc.yml

@@ -4,8 +4,10 @@ repo: upptime
 sites:
   - name: Website
     url: https://secshell.de
+    logoUrl: https://avatars.githubusercontent.com/u/83829311?s=200&v=4
   - name: Authentik
     url: https://auth.secshell.de
+    icon: https://auth.secshell.de/static/dist/assets/icons/icon.png
   - name: Mailserver
     url: https://mail.secshell.de