chore(package): update axios to version 0.19.0

Author: greenkeeper[bot]

package.json

@@ -39,7 +39,7 @@
   },
   "devDependencies": {
     "@types/jest": "^24.0.11",
-    "axios": "^0.18.0",
+    "axios": "^0.19.0",
     "axios-mock-adapter": "^1.16.0",
     "docsify-cli": "^4.3.0",
     "http-status-codes": "^1.3.2",