Bump org.testcontainers:testcontainers-bom from 1.20.3 to 1.20.4

Bumps [org.testcontainers:testcontainers-bom](https://github.com/testcontainers/testcontainers-java) 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:testcontainers-bom
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

pom.xml

@@ -75,7 +75,7 @@
 
         <!-- Dependency versions -->
         <version.org.jboss.arquillian.core>1.9.1.Final</version.org.jboss.arquillian.core>
-        <version.testcontainers>1.20.3</version.testcontainers>
+        <version.testcontainers>1.20.4</version.testcontainers>
         <version.org.junit>5.11.3</version.org.junit>
 
         <!-- Plugin versions -->