fix: upgrade @babel/core from 7.8.7 to 7.9.0

Snyk has created this PR to upgrade @babel/core from 7.8.7 to 7.9.0.

See this package in NPM:
https://www.npmjs.com/package/@babel/core

See this project in Snyk:
https://app.snyk.io/org/revjtanton/project/09a1968e-7b01-4032-9063-82f2e99f843e?utm_source=github&utm_medium=upgrade-pr

Author: snyk-bot

package-lock.json

@@ -33,7 +33,7 @@
   },
   "homepage": "https://github.com/CodeForBaltimore/Bmore-Responsive#readme",
   "dependencies": {
-    "@babel/core": "7.8.7",
+    "@babel/core": "7.9.0",
     "@babel/node": "7.8.7",
     "chai": "4.2.0",
     "cors": "2.8.5",