Fix token introspection link (should be 401)

src/oidc_test/main.py

@@ -281,9 +281,10 @@ async def get_introspect(
     token: Annotated[OAuth2Token, Depends(get_token)],
 ) -> JSONResponse:
     if (
-        response := await provider.get(
+        response := await provider.post(
             provider.server_metadata["introspection_endpoint"],
             token=token,
+            data={"token": token["access_token"]},
         )
     ).is_success:
         return response.json()