chore(package): update scratch-blocks to version 0.1.0-prerelease.1540391726

Closes #3475

Author: greenkeeper[bot]

package.json

@@ -98,7 +98,7 @@
     "redux-throttle": "0.1.1",
     "rimraf": "^2.6.1",
     "scratch-audio": "0.1.0-prerelease.20181023202904",
-    "scratch-blocks": "0.1.0-prerelease.1539267627",
+    "scratch-blocks": "0.1.0-prerelease.1540391726",
     "scratch-l10n": "3.0.20181010220115",
     "scratch-paint": "0.2.0-prerelease.20181017200201",
     "scratch-render": "0.1.0-prerelease.20181023192935",