Fixed use of dictionaries as values in Terms query (elastic#1921) (elastic#1925)

Fixes elastic#1920

(cherry picked from commit fb18f38)

Co-authored-by: Miguel Grinberg <miguel.grinberg@gmail.com>

Author: github-actions[bot]

utils/templates/query.py.tpl

@@ -365,7 +365,7 @@ EMPTY_QUERY = MatchAll()
     {% elif k.name == "Terms" %}
     def _setattr(self, name: str, value: Any) -> None:
         # here we convert any iterables that are not strings to lists
-        if hasattr(value, "__iter__") and not isinstance(value, (str, list)):
+        if hasattr(value, "__iter__") and not isinstance(value, (str, list, dict)):
             value = list(value)
         super()._setattr(name, value)