Bump testcontainers.version from 1.20.1 to 1.20.3

Bumps `testcontainers.version` from 1.20.1 to 1.20.3.

Updates `org.testcontainers:junit-jupiter` from 1.20.1 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@1.20.1...1.20.3)

Updates `org.testcontainers:kafka` from 1.20.1 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@1.20.1...1.20.3)

Updates `org.testcontainers:postgresql` from 1.20.1 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@1.20.1...1.20.3)

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

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

pom.xml

@@ -21,7 +21,7 @@
         <java.version>21</java.version>
         <common.version>3.2024.10.25_13.44-9db48a0dbe67</common.version>
         <kotlin.version>2.0.21</kotlin.version>
-        <testcontainers.version>1.20.1</testcontainers.version>
+        <testcontainers.version>1.20.3</testcontainers.version>
         <unleash.version>9.2.0</unleash.version>
 
         <!--   Used by SonarCloud     -->