chore(@theme-ui/custom-properties): import Theme from css

Author: hasparus

packages/custom-properties/package.json

@@ -19,7 +19,7 @@
     "pluralize": "^8.0.0"
   },
   "devDependencies": {
-    "@theme-ui/core": "^0.3.1",
+    "@theme-ui/css": "^0.3.1",
     "@types/pluralize": "^0.0.29"
   }
 }

packages/custom-properties/src/index.ts

@@ -1,5 +1,5 @@
 import pluralize from 'pluralize'
-import { Theme } from '@theme-ui/core'
+import { Theme } from '@theme-ui/css'
 
 interface CustomProperties {
   [key: string]: string | number