Bump org.testcontainers:testcontainers in /post-processing-service

Bumps [org.testcontainers:testcontainers](https://github.com/testcontainers/testcontainers-java) from 1.19.8 to 2.0.3.
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-java@1.19.8...2.0.3)

---
updated-dependencies:
- dependency-name: org.testcontainers:testcontainers
  dependency-version: 2.0.3
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

post-processing-service/build.gradle

@@ -94,9 +94,9 @@ dependencies {
     testImplementation(platform('org.junit:junit-bom:5.9.1'))
     testImplementation 'org.springframework.boot:spring-boot-starter-test'
     testImplementation 'org.springframework.security:spring-security-test:6.2.0'
-    testImplementation 'org.testcontainers:testcontainers:1.19.8'
-    testImplementation "org.testcontainers:kafka:1.19.8"
-    testImplementation "org.testcontainers:junit-jupiter:1.19.8"
+    testImplementation 'org.testcontainers:testcontainers:2.0.3'
+    testImplementation "org.testcontainers:kafka:2.0.3"
+    testImplementation "org.testcontainers:junit-jupiter:2.0.3"
 }
 
 dependencyManagement {