Bump org.testcontainers:postgresql from 1.19.4 to 1.19.6

Bumps [org.testcontainers:postgresql](https://github.com/testcontainers/testcontainers-java) from 1.19.4 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@1.19.4...1.19.6)

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

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

pom.xml

@@ -20,7 +20,7 @@
         <exec.mainClass>no.javatec.demo.ApplicationKt</exec.mainClass>
 
         <micronaut.runtime>netty</micronaut.runtime>
-        <testcontainers.version>1.19.4</testcontainers.version>
+        <testcontainers.version>1.19.6</testcontainers.version>
         <kotlinVersion>1.9.22</kotlinVersion>
     </properties>