project: update graal engine to 25.0.2

[benbroadaway]

• JDK25 compat (depends on common: use abstract MappingAuthConfig for thenCallRealMethod() support on mocks #1278)
  • fixes java.lang.NoSuchMethodError: 'void sun.misc.Unsafe.ensureClassInitialized(java.lang.Class)' errors

Note on script-engine changes/move: https://www.graalvm.org/latest/reference-manual/js/ScriptEngine/

Note: As of GraalVM for JDK 21, GraalVM no longer includes ScriptEngine by default. If you relied on that, you will have to migrate your setup to explicitly depend on the script engine module and add it to the module path.

..and shaded/uber-jar packaging: https://www.graalvm.org/latest/reference-manual/embed-languages/#uber-jar-file-creation

...creating an Uber JAR is not recommended for Graal languages because it breaks module descriptors, file integrity metadata, and JAR signature information. Uber JARs are only supported on HotSpot and are not supported for native image generation...