Bump flywayVersion from 10.15.0 to 10.15.2 (#525)

Bumps `flywayVersion` from 10.15.0 to 10.15.2.

Updates `org.flywaydb:flyway-core` from 10.15.0 to 10.15.2
- [Release notes](https://github.com/flyway/flyway/releases)
- [Commits](flyway/flyway@flyway-10.15.0...flyway-10.15.2)

Updates `org.flywaydb:flyway-database-postgresql` from 10.15.0 to 10.15.2

---
updated-dependencies:
- dependency-name: org.flywaydb:flyway-core
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.flywaydb:flyway-database-postgresql
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

build.gradle.kts

@@ -17,7 +17,7 @@ val javaxVersion = "2.1.1"
 val logstashEncoderVersion = "7.4"
 val postgresVersion = "42.7.3"
 val hikariVersion = "5.1.0"
-val flywayVersion = "10.15.0"
+val flywayVersion = "10.15.2"
 val vaultJdbcVersion = "1.3.9"
 val jacksonVersion = "2.17.1"
 val kafkaVersion = "3.7.0"