Accept UnboundMethod in TracePoint#enable

Author: soutaro

core/trace_point.rbs

@@ -352,8 +352,8 @@ class TracePoint
   #     trace.enable { p tp.lineno }
   #     #=> RuntimeError: access from outside
   #
-  def enable: (?target: Method | RubyVM::InstructionSequence | Proc | nil, ?target_line: int?, ?target_thread: Thread | :default | nil) -> bool
-            | [T] (?target: Method | RubyVM::InstructionSequence | Proc | nil, ?target_line: int?, ?target_thread: Thread | :default | nil) { () -> T } -> T
+  def enable: (?target: Method | UnboundMethod | RubyVM::InstructionSequence | Proc | nil, ?target_line: int?, ?target_thread: Thread | :default | nil) -> bool
+            | [T] (?target: Method | UnboundMethod | RubyVM::InstructionSequence | Proc | nil, ?target_line: int?, ?target_thread: Thread | :default | nil) { () -> T } -> T
 
   # <!--
   #   rdoc-file=trace_point.rb