Merge pull request #3731 from rschamp/bump-gui

Bump scratch-gui for release

package.json

@@ -128,7 +128,7 @@
     "redux-mock-store": "^1.2.3",
     "redux-thunk": "2.0.1",
     "sass-loader": "6.0.6",
-    "scratch-gui": "0.1.0-prerelease.20200228185709",
+    "scratch-gui": "0.1.0-prerelease.20200304215547",
     "scratch-l10n": "latest",
     "selenium-webdriver": "3.6.0",
     "slick-carousel": "1.6.0",