Bump postgresql from 14.1 to 14.3 (#1463)

Author: Berkays

containers/dotnet-postgres/.devcontainer/docker-compose.yml

@@ -27,7 +27,7 @@ services:
     # (Adding the "ports" property to this file will not forward from a Codespace.)
 
   db:
-    image: postgres:14.1
+    image: postgres:14.3
     restart: unless-stopped
     volumes:
       - postgres-data:/var/lib/postgresql/data