JT: Switch to the default debug port that mx uses

PullRequest: truffleruby/723

Author: nirvdrum

tool/jt.rb

@@ -25,7 +25,7 @@
 
 TRUFFLERUBY_GEM_TEST_PACK_VERSION = "8288cf66797da2e38770126d5c048bda876dd413"
 
-JDEBUG_PORT = 51819
+JDEBUG_PORT = 8000
 JDEBUG = "--vm.agentlib:jdwp=transport=dt_socket,server=y,address=#{JDEBUG_PORT},suspend=y"
 METRICS_REPS = Integer(ENV["TRUFFLERUBY_METRICS_REPS"] || 10)
 DEFAULT_PROFILE_OPTIONS = %w[--cpusampler --cpusampler.SampleInternal=true --cpusampler.Mode=roots --cpusampler.Output=json]