Update scratch-vm for offset fix

package.json

@@ -95,7 +95,7 @@
     "scratch-render": "0.1.0-prerelease.20180502115145",
     "scratch-svg-renderer": "0.1.0-prerelease.20180423193917",
     "scratch-storage": "0.4.1",
-    "scratch-vm": "0.1.0-prerelease.1525209256",
+    "scratch-vm": "0.1.0-prerelease.1525457332",
     "selenium-webdriver": "3.6.0",
     "startaudiocontext": "1.2.1",
     "style-loader": "^0.20.0",