chore: update schema [CI]

build/vega-lite-schema.json

@@ -21610,7 +21610,7 @@
           "description": "Reverse x-scale by default (useful for right-to-left charts)."
         },
         "zero": {
-          "description": "Default for ensuring that a zero baseline values for [`quantize`](https://vega.github.io/vega-lite/docs/scale.html#quantize) scale.\n\n\n__Default value:__ `true`",
+          "description": "Override the default `scale.zero` for [`continuous`](https://vega.github.io/vega-lite/docs/scale.html#continuous) scale except for non-ranged bar or area charts.\n\n__Default value:__ `true`",
           "type": "boolean"
         }
       },