Update the ballerina platform as java21

[MohamedSabthar]

$subject

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 41.15%. Comparing base (29ed866) to head (8f34c5a).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #10   +/-   ##
=======================================
  Coverage   41.15%   41.15%           
=======================================
  Files           3        3           
  Lines         294      294           
  Branches       82       82           
=======================================
  Hits          121      121           
  Misses        173      173           

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