chore(deps): update ghcr.io/it-at-m/refarch/refarch-gateway docker tag to v1.5.0

Author: renovate[bot]

stack/docker-compose.yml

@@ -96,7 +96,7 @@ services:
     security_opt: *security_settings
 
   refarch-gateway:
-    image: ghcr.io/it-at-m/refarch/refarch-gateway:1.4.2@sha256:068633218c65e0e60f8d583ab465553e977449c33b70054ae2c53f05fa5c3ad9
+    image: ghcr.io/it-at-m/refarch/refarch-gateway:1.5.0@sha256:9ebe76275d7aa7863f66e600ed91aa10c538faa183e06c0a6b3ef87fceb88315
     depends_on:
       init-keycloak:
         condition: service_completed_successfully