Use correct version for jruby

[ylecuyer]

Hello,

Following this new CVE for jruby https://github.com/rubysec/ruby-advisory-db/blob/master/rubies/jruby/CVE-2022-25857.yml we received the following report:

Name: jruby
Version: 2.6.8.0
Advisory: CVE-2022-25857
Criticality: High
URL: https://github.com/jruby/jruby/issues/7342 
Title: CVE-2022-25857 jruby/psych/snakeyaml: Denial of Service (DoS) due
 missing to nested depth limitation for collections
Solution: upgrade to >= 9.3.8.0

The reported version isn't correct, it uses the supported ruby version and not the jruby version.

I did a patch to use the jruby version when checking from jruby