Bumps the maven group with 4 updates in the / directory: [org.testcontainers:testcontainers-bom](https://github.com/testcontainers/testcontainers-java), [com.fasterxml.jackson.module:jackson-module-kotlin](https://github.com/FasterXML/jackson-module-kotlin), org.flywaydb:flyway-database-postgresql and org.jetbrains.kotlin:kotlin-maven-allopen.


Updates `org.testcontainers:testcontainers-bom` from 1.20.1 to 1.20.2
- [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...1.20.2)

Updates `com.fasterxml.jackson.module:jackson-module-kotlin` from 2.17.2 to 2.18.0
- [Commits](FasterXML/jackson-module-kotlin@jackson-module-kotlin-2.17.2...jackson-module-kotlin-2.18.0)

Updates `org.flywaydb:flyway-database-postgresql` from 10.18.2 to 10.20.0

Updates `org.jetbrains.kotlin:kotlin-maven-allopen` from 2.0.20 to 2.0.21

---
updated-dependencies:
- dependency-name: org.testcontainers:testcontainers-bom
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: maven
- dependency-name: com.fasterxml.jackson.module:jackson-module-kotlin
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: maven
- dependency-name: org.flywaydb:flyway-database-postgresql
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: maven
- dependency-name: org.jetbrains.kotlin:kotlin-maven-allopen
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: maven
...

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