[api]: Bump org.flywaydb:flyway-core from 10.20.1 to 10.21.0

Bumps [org.flywaydb:flyway-core](https://github.com/flyway/flyway) from 10.20.1 to 10.21.0.
- [Release notes](https://github.com/flyway/flyway/releases)
- [Commits](flyway/flyway@flyway-10.20.1...flyway-10.21.0)

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

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

settings.gradle.kts

@@ -36,7 +36,7 @@ dependencyResolutionManagement {
             library("koin", "io.insert-koin:koin-core:4.0.0")
             library("airline", "com.github.rvesse:airline:3.0.0")
             library("h2", "com.h2database:h2:2.3.232")
-            library("flyway", "org.flywaydb:flyway-core:10.20.1")
+            library("flyway", "org.flywaydb:flyway-core:10.21.0")
             library("exposed-core", "org.jetbrains.exposed:exposed-core:0.56.0")
             library("exposed-jdbc", "org.jetbrains.exposed:exposed-jdbc:0.56.0")
             library("ktor-core", "io.ktor:ktor-server-core-jvm:3.0.1")