Fix errors on newest mypy release

Author: vimalloc

README.md

@@ -52,7 +52,7 @@ tox
 A subset of checks can also be ran by adding an argument to tox. The available
 arguments are:
 
--   py36, py37, py38, py39, py310, pypy3
+-   py37, py38, py39, py310, pypy3
     -   Run unit tests on the given python version
 -   mypy
     -   Run mypy type checking

flask_jwt_extended/view_decorators.py

@@ -85,6 +85,10 @@ def verify_jwt_in_request(
     if request.method in config.exempt_methods:
         return None
 
+    # Should be impossible to hit, this makes mypy checks happy
+    if not _request_ctx_stack.top:  # pragma: no cover
+        raise RuntimeError("No _request_ctx_stack.top present, aborting")
+
     try:
         jwt_data, jwt_header, jwt_location = _decode_jwt_from_request(
             locations, fresh, refresh=refresh, verify_type=verify_type