Update ghcr.io/immich-app/postgres Docker tag to v16

Author: l4rm4nd

examples/immich/docker-compose.yml

@@ -55,7 +55,7 @@ services:
       - immich-internal
 
   immich-database:
-    image: ghcr.io/immich-app/postgres:14-vectorchord0.4.3-pgvectors0.2.0@sha256:bcf63357191b76a916ae5eb93464d65c07511da41e3bf7a8416db519b40b1c23
+    image: ghcr.io/immich-app/postgres:16-vectorchord0.4.3-pgvectors0.2.0@sha256:1a078b237c1d9b420b0ee59147386b4aa60d3a07a8e6a402fc84a57e41b043a4
     container_name: immich-database
     env_file:
       - .env