fix: correct dstack-ingress image digest (CPL-152) (#188)

Use the digest from the official dstack-ingress v1.4 release:
https://github.com/Dstack-TEE/dstack-examples/releases/tag/dstack-ingress-v1.4

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: Garandor

docker-compose.phala.yml

@@ -99,7 +99,7 @@ services:
   # Obtains a Let's Encrypt cert for DOMAIN via DNS-01 (Route 53), then
   # reverse-proxies HTTPS :443 → lit-api-server :8000.
   dstack-ingress:
-    image: dstacktee/dstack-ingress:1.4@sha256:11c0481ca2e3566f514a1c8a2cc69af1e0bb9dab2e4ea49b469c81ec8e7c5c72
+    image: dstacktee/dstack-ingress:1.4@sha256:11c0481ca1e2ef9c959187ff3c01c7f59c26d631c7717a571ad994b96203bb0b
     ports:
       - "443:443"
     environment: