fix(frigate-webhook): add imagePullSecrets for ghcr.io

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: web-flow

gitops/clusters/homelab/apps/frigate-ip-webhook/deployment.yaml

@@ -50,6 +50,8 @@ spec:
         app: frigate-ip-webhook
     spec:
       serviceAccountName: frigate-ip-webhook
+      imagePullSecrets:
+        - name: ghcr-creds
       containers:
         - name: webhook
           image: ghcr.io/homeiac/frigate-ip-webhook:latest