chore(deps): update postgres docker tag to v16.3

Author: renovate[bot]

kafka-reactor/boot-kafka-reactor-consumer/docker/docker-compose.yml

@@ -38,7 +38,7 @@ services:
       - broker
 
   postgresqldb:
-    image: postgres:16.2-alpine
+    image: postgres:16.3-alpine
     environment:
       - POSTGRES_USER=appuser
       - POSTGRES_PASSWORD=secret

spring-modulith-outbox-pattern/docker/docker-compose.yml

@@ -2,7 +2,7 @@ version: '3.8'
 services:
 
   postgresql:
-    image: postgres:16.2-alpine
+    image: postgres:16.3-alpine
     environment:
       - POSTGRES_USER=appuser
       - POSTGRES_PASSWORD=secret