Liquibase CLI cannot execute custom changes written in Kotlin - kotlin

Question

We write our custom changes in Kotlin. But we cannot execute these custom changes using the Liquibase CLI, because the kotlin-stdlib is missing from the classpath.
Here's my liquibase.properties file:
changelog-file:db/changelog.yaml
driver:org.postgresql.Driver
url:jdbc:postgresql://localhost:5432/project
username:postgres
password:postgres
classpath:build/classes/kotlin/main:src/main/resources
includeSystemClasspath:true
In src/main/resources we keep the changelog.yaml and the changesets, while in build/classes/kotlin/main we have the custom changes written in Kotlin.
Running liquibase update --log-level=debug return the following output:
[...]
Caused by: java.lang.ClassNotFoundException: kotlin.jvm.internal.Intrinsics
at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:471)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:589)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
... 70 more
Caused by: liquibase.exception.ValidationFailedException: Validation Failed:
2 changes have validation errors
liquibase.exception.UnexpectedLiquibaseException: liquibase.exception.CustomChangeException: liquibase.exception.UnexpectedLiquibaseException: java.lang.reflect.InvocationTargetException
liquibase.exception.UnexpectedLiquibaseException: liquibase.exception.CustomChangeException: liquibase.exception.UnexpectedLiquibaseException: java.lang.reflect.InvocationTargetException
If I hard code the path to the kotlin-stdlib in the liquibase.properties file, then gradle update works fine.
classpath:build/classes/kotlin/main:src/main/resources:/Home/user/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.6.21/11ef67f1900634fd951bad28c53ec957fabbe5b8/kotlin-stdlib-1.6.21.jar
But we cannot hard code it in liquibase.properties as the path to the kotlin-stdlib would be different for each machine. I was expecting that exporting it in the system CLASSPATH would solve this issue:
export CLASSPATH=/Home/user/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.6.21
This doesn't seem to work, even when we specified includeSystemClasspath:true in the liquibase.properties file.
Using the LIQUIBASE_CLASSPATH env variable requires a Liquibase Pro or Labs license.
Liquibase Community detected and ignored the following environment variables:
- LIQUIBASE_CLASSPATH
To configure Liquibase with environment variables requires a Liquibase Pro or Liquibase Labs license. Get a free trial at https://liquibase.com/trial. Options include the liquibase.licenseKey in the defaults file, adding a flag in the CLI, and more. Learn more at https://docs.liquibase.com.