Upgrade @microbit/ui to 0.1.0-alpha.12

Author: microbit-matt-hillsdon

package-lock.json

@@ -21,7 +21,7 @@
     "@codemirror/view": "^6.26.3",
     "@microbit/microbit-connection": "^1.0.0",
     "@microbit/microbit-fs": "^0.10.0",
-    "@microbit/ui": "0.1.0-alpha.11",
+    "@microbit/ui": "0.1.0-alpha.12",
     "@sanity/block-content-to-react": "^3.0.0",
     "@sanity/image-url": "^1.0.1",
     "@testing-library/jest-dom": "^5.14.1",