Bump axios in /blockchain-workbench/auth-samples/nodejs

Bumps [axios](https://github.com/axios/axios) from 0.18.0 to 0.19.2.
- [Release notes](https://github.com/axios/axios/releases)
- [Changelog](https://github.com/axios/axios/blob/master/CHANGELOG.md)
- [Commits](axios/axios@v0.18.0...v0.19.2)

Signed-off-by: dependabot[bot] <support@github.com>

blockchain-workbench/auth-samples/nodejs/package.json

@@ -9,7 +9,7 @@
   "author": "Ali Hajimirza",
   "license": "MIT",
   "dependencies": {
-    "axios": "0.18.0",
+    "axios": "0.19.2",
     "qs": "6.6.0"
   }
 }