chore(deps): update dependency org.junit:junit-bom to v6.0.3 (#2829)

| datasource | package             | from  | to    |
| ---------- | ------------------- | ----- | ----- |
| maven      | org.junit:junit-bom | 6.0.2 | 6.0.3 |

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Roman Kvasnytskyi <roman@kvasnytskyi.net>

Author: renovate[bot]

testcontainers-spring-boot-parent/pom.xml

@@ -19,7 +19,7 @@
         <spring.cloud.version>2025.0.1</spring.cloud.version>
         <spring.cloud.gcp.version>7.4.5</spring.cloud.gcp.version>
         <equalsverifier.version>4.3.1</equalsverifier.version>
-        <junit-jupiter.version>6.0.2</junit-jupiter.version>
+        <junit-jupiter.version>6.0.3</junit-jupiter.version>
         <spring.cloud.azure.version>7.0.0</spring.cloud.azure.version>
         <toxiproxy-java.version>2.1.11</toxiproxy-java.version>
     </properties>