[lldb][test] Skip more of TestDAP_attach.py on Windows

Flakey on Windows on Arm:
https://lab.llvm.org/buildbot/#/builders/141/builds/11181

See #137660.

Author: DavidSpickett

lldb/test/API/tools/lldb-dap/attach/TestDAP_attach.py

@@ -40,6 +40,7 @@ def set_and_hit_breakpoint(self, continueToExit=True):
             self.continue_to_exit()
 
     @skipIfNetBSD  # Hangs on NetBSD as well
+    @skipIfWindows # https://github.com/llvm/llvm-project/issues/137660
     def test_by_pid(self):
         """
         Tests attaching to a process by process ID.