fix(typing): Add patch for vl-convert-python=1.7.0

Will open a new PR to merge this, related to vega/vl-convert#185

tools/generate_schema_wrapper.py

@@ -45,6 +45,7 @@
 
 if TYPE_CHECKING:
     from tools.schemapi.codegen import ArgInfo, AttrGetter
+    from vl_convert import VegaThemes
 
 SCHEMA_VERSION: Final = "v5.20.1"
 
@@ -482,8 +483,8 @@ def download_schemafile(
 
 
 def _vega_lite_props_only(
-    themes: dict[str, dict[str, Any]], props: SchemaProperties, /
-) -> Iterator[tuple[str, dict[str, Any]]]:
+    themes: dict[VegaThemes, dict[str, Any]], props: SchemaProperties, /
+) -> Iterator[tuple[VegaThemes, dict[str, Any]]]:
     """Removes properties that are allowed in `Vega` but not `Vega-Lite` from theme definitions."""
     keep = props.keys()
     for name, theme_spec in themes.items():