Bump org.testcontainers:testcontainers from 1.20.2 to 1.20.3 in /service (#977)

Bumps [org.testcontainers:testcontainers](https://github.com/testcontainers/testcontainers-java) from 1.20.2 to 1.20.3.
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-java@1.20.2...1.20.3)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

service/build.gradle

@@ -65,7 +65,7 @@ dependencies {
 	// Test
 	testImplementation 'org.springframework.boot:spring-boot-starter-test'
 	testImplementation "org.assertj:assertj-core:3.26.3"
-	testImplementation 'org.testcontainers:testcontainers:1.20.2'
+	testImplementation 'org.testcontainers:testcontainers:1.20.3'
 	testImplementation 'org.awaitility:awaitility:4.2.2'
 	testImplementation 'org.junit.jupiter:junit-jupiter-params:5.10.3'
 	testImplementation 'org.wiremock:wiremock-standalone:3.9.2'