Do not import from unpackaged paths in typing (#1926)

The tests path is not part of the shipped project, thus this type cannot
be checked by users of this project.

The correct type in place of the type imported from tests appears to be
Optional[
    Union[HTTPRequestsConnectionClass, HTTPSRequestsConnectionClass]
]

github/Requester.pyi

@@ -5,7 +5,6 @@ from typing import Any, Callable, Dict, Iterator, Optional, Tuple, Union
 from requests.models import Response
 
 from github.GithubObject import GithubObject
-from tests.Framework import ReplayingHttpsConnection
 
 # from urllib3.util.retry import Retry
 
@@ -57,7 +56,9 @@ class Requester:
     def __authenticate(
         self, url: str, responseHeader: Dict[str, Any], parameters: Dict[str, Any],
     ) -> None: ...
-    def __customConnection(self, url: str,) -> Optional[ReplayingHttpsConnection]: ...
+    def __customConnection(
+        self, url: str,
+    ) -> Optional[Union[HTTPRequestsConnectionClass, HTTPSRequestsConnectionClass]]: ...
     def __createConnection(
         self,
     ) -> Union[HTTPRequestsConnectionClass, HTTPSRequestsConnectionClass]: ...
@@ -120,7 +121,9 @@ class Requester:
         parameters: Dict[str, str] = ...,
         headers: Dict[str, str] = ...,
         input: Optional[str] = ...,
-        cnx: Optional[ReplayingHttpsConnection] = ...,
+        cnx: Optional[
+            Union[HTTPRequestsConnectionClass, HTTPSRequestsConnectionClass]
+        ] = ...,
     ) -> Tuple[int, Dict[str, Any], str]: ...
     def requestBlobAndCheck(
         self,
@@ -137,7 +140,9 @@ class Requester:
         parameters: Optional[Dict[str, Any]] = ...,
         headers: Optional[Dict[str, Any]] = ...,
         input: Optional[Any] = ...,
-        cnx: Optional[ReplayingHttpsConnection] = ...,
+        cnx: Optional[
+            Union[HTTPRequestsConnectionClass, HTTPSRequestsConnectionClass]
+        ] = ...,
     ) -> Tuple[int, Dict[str, Any], str]: ...
     def requestJsonAndCheck(
         self,
@@ -154,7 +159,9 @@ class Requester:
         parameters: Optional[Dict[str, Any]] = ...,
         headers: Optional[Dict[str, Any]] = ...,
         input: Optional[OrderedDict] = ...,
-        cnx: Optional[ReplayingHttpsConnection] = ...,
+        cnx: Optional[
+            Union[HTTPRequestsConnectionClass, HTTPSRequestsConnectionClass]
+        ] = ...,
     ) -> Tuple[int, Dict[str, Any], str]: ...
     def requestMultipartAndCheck(
         self,