chore: bump controller image to 20a1a90 (internalService + stateless-only ports) (#100)

Picks up the post-#99 controller binary:
- new SeiNodeDeployment.status.internalService field
- per-deployment ClusterIP Service with the stateless HTTP port set
  (rpc/evm-http/rest only — evm-ws and grpc deliberately excluded)
- internal Service lifecycle is independent of .spec.networking

Unblocks the autobake workflow (platform repo, M2b) which reads
status.internalService.name to dial the chain's RPC.

Image:
  189176372795.dkr.ecr.us-east-2.amazonaws.com/sei/sei-k8s-controller:20a1a9038725109d434f3940797200afaf75aa44
  sha256:05ee5a60d3541c10e0409086381284a1e1695aabd771a14b049de170e1ac0a37

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: bdchatham

config/manager/manager.yaml

@@ -32,7 +32,7 @@ spec:
           - --metrics-bind-address=:8080
           - --leader-elect
           - --health-probe-bind-address=:8081
-        image: 189176372795.dkr.ecr.us-east-2.amazonaws.com/sei/sei-k8s-controller:da0ae1bbfd60a0d7cf632c66990e68bfe33a3da8
+        image: 189176372795.dkr.ecr.us-east-2.amazonaws.com/sei/sei-k8s-controller:20a1a9038725109d434f3940797200afaf75aa44
         name: manager
         env:
           - name: SEI_NODEPOOL_NAME