Update postgres Docker tag to v17.9

Author: renovate[bot]

docker-compose.yml

@@ -1,6 +1,6 @@
 services:
   database:
-    image: postgres:17.2
+    image: postgres:17.9
     environment:
       - POSTGRES_USER=test
       - POSTGRES_PASSWORD=test

src/test/java/de/rieckpil/courses/AbstractIntegrationTest.java

@@ -44,7 +44,7 @@
 public abstract class AbstractIntegrationTest {
 
   static PostgreSQLContainer database =
-      new PostgreSQLContainer("postgres:17.2")
+      new PostgreSQLContainer("postgres:17.9")
           .withDatabaseName("test")
           .withUsername("duke")
           .withPassword("s3cret");

src/test/java/de/rieckpil/courses/ApplicationIT.java

@@ -33,7 +33,7 @@ class ApplicationIT {
 
   @Container
   static PostgreSQLContainer database =
-      new PostgreSQLContainer("postgres:17.2")
+      new PostgreSQLContainer("postgres:17.9")
           .withDatabaseName("test")
           .withUsername("duke")
           .withPassword("s3cret");

src/test/java/de/rieckpil/courses/TestcontainersConfig.java

@@ -48,7 +48,7 @@ public DynamicPropertyRegistrar properties(
   @Bean
   @ServiceConnection
   PostgreSQLContainer database() {
-    return new PostgreSQLContainer("postgres:17.2")
+    return new PostgreSQLContainer("postgres:17.9")
         .withDatabaseName("test")
         .withUsername("duke")
         .withPassword("s3cret");

src/test/java/de/rieckpil/courses/book/management/BookSynchronizationListenerIT.java

@@ -48,7 +48,7 @@
 class BookSynchronizationListenerIT {
 
   static PostgreSQLContainer database =
-      new PostgreSQLContainer("postgres:17.2")
+      new PostgreSQLContainer("postgres:17.9")
           .withDatabaseName("test")
           .withUsername("duke")
           .withPassword("s3cret");

src/test/java/de/rieckpil/courses/book/review/ReviewRepositoryNoInMemoryTest.java

@@ -23,7 +23,7 @@ class ReviewRepositoryNoInMemoryTest {
 
   @Container
   static PostgreSQLContainer container =
-      new PostgreSQLContainer("postgres:17.2")
+      new PostgreSQLContainer("postgres:17.9")
           .withDatabaseName("test")
           .withUsername("duke")
           .withPassword("s3cret");