Update javassist from version 3.21.0-GA to 3.25.0-GA

Current Situation

• javassist is a 3rd-party jar used by hibernate for database transactions
• With version 3.21.0-GA and Java version > 8 the following warning is raised during the JobScheduler installation.

  WARNING: Illegal reflective access by javassist.util.proxy.SecurityActions (file:/opt/sos-berlin.com/jobscheduler/jobscheduler-1.12.9/lib/3rd-party/javassist-3.21.0-GA.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain)
  WARNING: Please consider reporting this to the maintainers of javassist.util.proxy.SecurityActions
  WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
  WARNING: All illegal access operations will be denied in a future release
  

• This problem is solved with javassist version 3.25.0-GA.

Desired Behavior

Update javassist to avoid above warning.