Merge pull request #2397 from cjmayo/getargspec

Replace inspect.getargspec() that was removed in Python 3.11

Author: samuelhwilliams

flask_admin/contrib/sqla/view.py

@@ -999,7 +999,7 @@ def _apply_filters(self, query, count_query, joins, count_joins, filters):
             try:
                 query = flt.apply(query, clean_value, alias)
             except TypeError:
-                spec = inspect.getargspec(flt.apply)
+                spec = inspect.getfullargspec(flt.apply)
 
                 if len(spec.args) == 3:
                     warnings.warn('Please update your custom filter %s to '