Fixed whoami crash when IDP returns null claims #65
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When an IDP returns a claim with a null value, the /whoami return a 500 error because of a NullPointerException in Spring Security (claimValue is null in Assert lambda in ClaimAccessor::getClaimAsStringList, which handles non-existing claim or existing not null claim, but does not handle existing null claims).
Fixed by removing null claims from the decoded token before giving it to Spring Security.