Update MySQL and PostgreSQL Docker images to latest versions

Signed-off-by: Patrick Baumgartner <contact@patbaumgartner.com>

Author: patbaumgartner

README.md

@@ -63,13 +63,13 @@ A similar setup is provided for MySQL and PostgreSQL if a persistent database co
 You can start MySQL or PostgreSQL locally with whatever installer works for your OS or use docker:
 
 ```bash
-docker run -e MYSQL_USER=petclinic -e MYSQL_PASSWORD=petclinic -e MYSQL_ROOT_PASSWORD=root -e MYSQL_DATABASE=petclinic -p 3306:3306 mysql:9.5
+docker run -e MYSQL_USER=petclinic -e MYSQL_PASSWORD=petclinic -e MYSQL_ROOT_PASSWORD=root -e MYSQL_DATABASE=petclinic -p 3306:3306 mysql:9.6
 ```
 
 or
 
 ```bash
-docker run -e POSTGRES_USER=petclinic -e POSTGRES_PASSWORD=petclinic -e POSTGRES_DB=petclinic -p 5432:5432 postgres:18.1
+docker run -e POSTGRES_USER=petclinic -e POSTGRES_PASSWORD=petclinic -e POSTGRES_DB=petclinic -p 5432:5432 postgres:18.3
 ```
 
 Further documentation is provided for [MySQL](https://github.com/spring-projects/spring-petclinic/blob/main/src/main/resources/db/mysql/petclinic_db_setup_mysql.txt)

docker-compose.yml

@@ -1,6 +1,6 @@
 services:
   mysql:
-    image: mysql:9.5
+    image: mysql:9.6
     ports:
       - "3306:3306"
     environment:
@@ -12,7 +12,7 @@ services:
     volumes:
       - "./conf.d:/etc/mysql/conf.d:ro"
   postgres:
-    image: postgres:18.1
+    image: postgres:18.3
     ports:
       - "5432:5432"
     environment:

k8s/db.yml

@@ -41,7 +41,7 @@ spec:
         app: demo-db
     spec:
       containers:
-        - image: postgres:18.1
+        - image: postgres:18.3
           name: postgresql
           env:
             - name: POSTGRES_USER

src/test/java/org/springframework/samples/petclinic/MySqlIntegrationTests.java

@@ -47,7 +47,7 @@ class MySqlIntegrationTests {
 
 	@ServiceConnection
 	@Container
-	static MySQLContainer container = new MySQLContainer(DockerImageName.parse("mysql:9.5"));
+	static MySQLContainer container = new MySQLContainer(DockerImageName.parse("mysql:9.6"));
 
 	@LocalServerPort
 	int port;

src/test/java/org/springframework/samples/petclinic/MysqlTestApplication.java

@@ -36,7 +36,7 @@ public class MysqlTestApplication {
 	@Profile("mysql")
 	@Bean
 	static MySQLContainer container() {
-		return new MySQLContainer(DockerImageName.parse("mysql:9.5"));
+		return new MySQLContainer(DockerImageName.parse("mysql:9.6"));
 	}
 
 	public static void main(String[] args) {