Update scratch svg renderer (#3228)

package.json

@@ -101,7 +101,7 @@
     "scratch-paint": "0.2.0-prerelease.20180918203812",
     "scratch-render": "0.1.0-prerelease.20180918201144",
     "scratch-storage": "1.0.2",
-    "scratch-svg-renderer": "0.2.0-prerelease.20180907141232",
+    "scratch-svg-renderer": "0.2.0-prerelease.20180926143036",
     "scratch-vm": "0.2.0-prerelease.20180918201814",
     "selenium-webdriver": "3.6.0",
     "startaudiocontext": "1.2.1",