Bump testcontainers.version from 1.20.3 to 1.20.4

Bumps `testcontainers.version` from 1.20.3 to 1.20.4.

Updates `org.testcontainers:mockserver` from 1.20.3 to 1.20.4
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-java@1.20.3...1.20.4)

Updates `org.testcontainers:mariadb` from 1.20.3 to 1.20.4
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-java@1.20.3...1.20.4)

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

Signed-off-by: dependabot[bot] <[email protected]>

pom.xml

@@ -39,7 +39,7 @@
 
 	<properties>
 		<java.version>21</java.version>
-		<testcontainers.version>1.20.3</testcontainers.version>
+		<testcontainers.version>1.20.4</testcontainers.version>
 		<spring-prometheus-app-info-version>2.0.3</spring-prometheus-app-info-version>
 		<spring-request-id-logger-version>2.0.1</spring-request-id-logger-version>
 		<jacoco-version>0.8.12</jacoco-version>