Add ORACLE to GraalVM synonyms

Since the latest update to gradle foojay plugin it's now possible to filter by build_of_graalvm parameter available from the foojay disco api, but the problem is that there is too little differentiation from the graalvm community edition and the new oracle graalvm, so the plugin ends up always pulling the community edition one.

If we could add all variations of "Oracle GraalVM" to the synonyms of https://github.com/foojayio/discoapi/blob/main/src/main/java/io/foojay/api/distribution/GraalVM.java#L136 then it would be pretty straightforward to select the correct version.

This change would render unique all the following combinations:

| Vendor | Native Compatible | Distribution |
| ------ | ----------------- | ------------ |
| GraalVM | true | GraalVM CE |
| Oracle | true | GraalVM |
| Oracle | false | Oracle JDK |