Fix auth tests and ruff format (#818)

src/mcp/client/session_group.py

@@ -154,7 +154,6 @@ class ClientSessionGroup:
             for exit_stack in self._session_exit_stacks.values():
                 tg.start_soon(exit_stack.aclose)
 
-
     @property
     def sessions(self) -> list[mcp.ClientSession]:
         """Returns the list of sessions being managed."""

src/mcp/server/auth/routes.py

@@ -153,12 +153,8 @@ def build_metadata(
     client_registration_options: ClientRegistrationOptions,
     revocation_options: RevocationOptions,
 ) -> OAuthMetadata:
-    authorization_url = AnyHttpUrl(
-        str(issuer_url).rstrip("/") + AUTHORIZATION_PATH
-    )
-    token_url = AnyHttpUrl(
-        str(issuer_url).rstrip("/") + TOKEN_PATH
-    )
+    authorization_url = AnyHttpUrl(str(issuer_url).rstrip("/") + AUTHORIZATION_PATH)
+    token_url = AnyHttpUrl(str(issuer_url).rstrip("/") + TOKEN_PATH)
 
     # Create metadata
     metadata = OAuthMetadata(