Fix pangolin-controller rollout by using Recreate strategy

The controller uses leader election with replicas=1. During RollingUpdate,
the new pod cannot acquire the leader lease (old pod holds it) and fails
health checks, causing indefinite restart loops.

Recreate strategy ensures the old pod terminates before the new one starts,
allowing clean leader election transitions.

Fixes: DEV-442

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/pangolin/pangolin-controller-deployment.yaml

@@ -8,6 +8,8 @@ metadata:
     component: controller
 spec:
   replicas: 1
+  strategy:
+    type: Recreate
   selector:
     matchLabels:
       app: pangolin-controller