Multiple instances per client not possible

[PSanetra]

It is currently not possible to have two instances of this mapper as the plugin uses a global cache key to cache the claim value. This causes one of the two instances to reuse the claim value of the other one:

https://github.com/groupe-sii/keycloak-json-remote-claim/blob/7e8b326060a0042da699056e10e779f6e7733d3a/src/main/java/fr/sii/keycloak/JsonRemoteClaim.java