gluonhq/setup-graalvm doesn't provide an issue tracker, so I hope this is the right place.
At the moment, the Action causes the following warning because it is using node12 instead of node16:
The following actions uses node12 which is deprecated and will be forced to run on node16: gluonhq/setup-graalvm@6eecc74. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/
There is already an update PR available:
gluonhq/setup-graalvm#6