Revert "fix: upgrade axios from 0.18.0 to 0.19.0 (#93)"

This reverts commit 915abc6.

Author: zahin-mohammad

package-lock.json

@@ -5,7 +5,7 @@
   "dependencies": {
     "@material-ui/core": "^3.9.0",
     "@material-ui/icons": "^3.0.2",
-    "axios": "^0.19.0",
+    "axios": "^0.18.0",
     "firebase": "^5.11.1",
     "connected-react-router": "^6.6.1",
     "history": "^4.10.1",