Update http_exceptions.py

aiohttp/http_exceptions.py

@@ -2,7 +2,7 @@
 
 from textwrap import indent
 
-from .typedefs import _CIMultiDict
+from multidict import CIMultiDict
 
 __all__ = ("HttpProcessingError",)
 
@@ -26,7 +26,7 @@ def __init__(
         *,
         code: int | None = None,
         message: str = "",
-        headers: _CIMultiDict | None = None,
+        headers: CIMultiDict[str] | None = None,
     ) -> None:
         if code is not None:
             self.code = code
@@ -45,7 +45,7 @@ class BadHttpMessage(HttpProcessingError):
     code = 400
     message = "Bad Request"
 
-    def __init__(self, message: str, *, headers: _CIMultiDict | None = None) -> None:
+    def __init__(self, message: str, *, headers: CIMultiDict[str] | None = None) -> None:
         super().__init__(message=message, headers=headers)
         self.args = (message,)