Bump org.testcontainers:kafka from 1.20.1 to 1.20.4

Bumps [org.testcontainers:kafka](https://github.com/testcontainers/testcontainers-java) from 1.20.1 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@1.20.1...1.20.4)

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

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

pom.xml

@@ -19,7 +19,7 @@
 
     <properties>
         <java.version>21</java.version>
-        <testcontainers.version>1.20.1</testcontainers.version>
+        <testcontainers.version>1.20.4</testcontainers.version>
         <common.version>3.2024.04.22_13.50-7815154a2573</common.version>
         <tjenestespesifikasjoner.version>1.2019.09.25-00.21-49b69f0625e0</tjenestespesifikasjoner.version>
         <cxf-codegen.version>4.0.5</cxf-codegen.version>