chore(deps): update ghcr.io/immich-app/postgres docker tag to v15

Author: wajeht-renovate[bot]

apps/immich/docker-compose.yml

@@ -116,7 +116,7 @@ services:
 
   immich-db:
     container_name: immich-db
-    image: ghcr.io/immich-app/postgres:14-vectorchord0.3.0-pgvectors0.2.0@sha256:c570d9e1c2494f65d2a0a379a7f6df66e8441964254a30aa62cc58e8ebf1dee0
+    image: ghcr.io/immich-app/postgres:15-vectorchord0.3.0-pgvectors0.2.0@sha256:e4f336e5098a278bca43641ae118435dde58b2d9d3029effc682dc35f9fbb488
     env_file:
       - .env
     environment: