Merge pull request #183 from uclaacm/dependabot/npm_and_yarn/cross-env-7.0.0

Bump cross-env from 6.0.3 to 7.0.0

Author: mattxwang

Diff for: package-lock.json

@@ -10,7 +10,7 @@
     "@fortawesome/react-fontawesome": "^0.1.8",
     "bootstrap": ">=4.4.1",
     "codemirror": "^5.51.0",
-    "cross-env": "^6.0.3",
+    "cross-env": "^7.0.0",
     "crypto-js": "^3.1.9-1",
     "firebase": "^7.7.0",
     "immutable": "^3.8.2",