Based on stack dump the test is still running:

   {
            "tid": "3",
            "time": "2025-09-09T15:15:18.994366224Z",
            "name": "main",
            "state": "RUNNABLE",
            "stack": [
              "java.base\/java.io.FileOutputStream.writeBytes(Native Method)",
              "java.base\/java.io.FileOutputStream.write(FileOutputStream.java:352)",
              "java.base\/java.lang.System$Out.write(System.java:1910)",
              "java.base\/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:123)",
              "java.base\/java.io.BufferedOutputStream.write(BufferedOutputStream.java:188)",
              "java.base\/java.io.PrintStream.write(PrintStream.java:539)",
              "java.base\/sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:220)",
              "java.base\/sun.nio.cs.StreamEncoder.implFlushBuffer(StreamEncoder.java:315)",
              "java.base\/sun.nio.cs.StreamEncoder.flushBuffer(StreamEncoder.java:101)",
              "java.base\/java.io.OutputStreamWriter.flushBuffer(OutputStreamWriter.java:179)",
              "java.base\/java.io.PrintStream.writeln(PrintStream.java:690)",
              "java.base\/java.io.PrintStream.println(PrintStream.java:1027)",
              "java.base\/java.lang.Throwable$WrappedPrintStream.println(Throwable.java:790)",
              "java.base\/java.lang.Throwable.printStackTrace(Throwable.java:697)",
              "java.base\/java.lang.Throwable.printStackTrace(Throwable.java:686)",
              "java.base\/java.lang.Throwable.printStackTrace(Throwable.java:677)",
              "jdk.hotspot.agent\/sun.jvm.hotspot.memory.CodeHeap.iterate(CodeHeap.java:120)",
              "jdk.hotspot.agent\/sun.jvm.hotspot.code.CodeCache.iterate(CodeCache.java:132)",
              "TestDebugInfoDecode.checkDecode(TestDebugInfoDecode.java:83)",
              "TestDebugInfoDecode.main(TestDebugInfoDecode.java:117)"
            ],

so have to suspect the reduced timeout of 120s.