[PULL 5/8] qapi: Add minor typing workaround for 3.6

[Markus Armbruster <armbru@redhat.com>]

From: John Snow <jsnow@redhat.com>

Pylint under 3.6 does not believe that Collection is subscriptable at
runtime. It is, making this a Pylint
bug. https://github.com/PyCQA/pylint/issues/2377

They closed it as fixed, but that doesn't seem to be true as of Pylint
2.13.9, the latest version you can install under Python 3.6. 2.13.9 was
released 2022-05-13, about seven months after the bug was closed.

The least-annoying fix here is to just use the concret type.

Signed-off-by: John Snow <jsnow@redhat.com>
Message-Id: <20230215000011.1725012-4-jsnow@redhat.com>
[Dumbed down from Sequence[str] to List[str], commit message adjusted]
Reviewed-by: Markus Armbruster <armbru@redhat.com>
---
 scripts/qapi/expr.py | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/scripts/qapi/expr.py b/scripts/qapi/expr.py
index 5a1782b57e..358b8e2a8b 100644
--- a/scripts/qapi/expr.py
+++ b/scripts/qapi/expr.py
@@ -33,7 +33,6 @@
 
 import re
 from typing import (
-    Collection,
     Dict,
     Iterable,
     List,
@@ -195,8 +194,8 @@ def check_defn_name_str(name: str, info: QAPISourceInfo, meta: str) -> None:
 def check_keys(value: _JSONObject,
                info: QAPISourceInfo,
                source: str,
-               required: Collection[str],
-               optional: Collection[str]) -> None:
+               required: List[str],
+               optional: List[str]) -> None:
     """
     Ensure that a dict has a specific set of keys.
 
-- 
2.39.0