update test

tests/protocol_arg.pyi

@@ -1,7 +1,7 @@
 from typing import Protocol
 
 class P(Protocol):
-    def method1(self, arg: int) -> None: ...  # Y067 Argument "arg" to protocol method "method1" should probably not be positional-or-keyword. Make it positional-only, since usually you don't want to mandate a specific argument name
+    def method1(self, arg: int) -> None: ...  # Y091 Argument "arg" to protocol method "method1" should probably not be positional-or-keyword. Make it positional-only, since usually you don't want to mandate a specific argument name
     def method2(self, arg: str, /) -> None: ...
     def method3(self, *, arg: str) -> None: ...
     def method4(self, arg: int, /) -> None: ...