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:elasticsearch` 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:minio` 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:nginx` 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:elasticsearch
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.testcontainers:minio
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.testcontainers:nginx
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

pom.xml

@@ -72,7 +72,7 @@
         <tests.cluster.user>elastic</tests.cluster.user>
         <tests.cluster.pass>changeme</tests.cluster.pass>
         <tests.rest.port>0</tests.rest.port>
-        <testcontainers.version>1.20.3</testcontainers.version>
+        <testcontainers.version>1.20.4</testcontainers.version>
 
         <!-- Randomized testing framework -->
         <tests.locale>random</tests.locale>