Bump lib.testcontainers.version from 1.18.3 to 1.19.6

Bumps `lib.testcontainers.version` from 1.18.3 to 1.19.6.

Updates `org.testcontainers:redpanda` from 1.18.3 to 1.19.6
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-java@1.18.3...1.19.6)

Updates `org.testcontainers:postgresql` from 1.18.3 to 1.19.6
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-java@1.18.3...1.19.6)

---
updated-dependencies:
- dependency-name: org.testcontainers:redpanda
  dependency-type: direct:development
  update-type: version-update:semver-minor
- dependency-name: org.testcontainers:postgresql
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

pom.xml

@@ -107,7 +107,7 @@
         <lib.parallel-consumer.version>0.5.2.8</lib.parallel-consumer.version>
         <lib.pebble.version>3.2.2</lib.pebble.version>
         <lib.protobuf-java.version>3.25.3</lib.protobuf-java.version>
-        <lib.testcontainers.version>1.18.3</lib.testcontainers.version>
+        <lib.testcontainers.version>1.19.6</lib.testcontainers.version>
         <lib.resilience4j.version>2.2.0</lib.resilience4j.version>
         <lib.system-rules.version>1.19.0</lib.system-rules.version>
         <lib.versatile.version>0.4.1</lib.versatile.version>