Bump @google-cloud/storage from 2.3.1 to 2.3.4

Bumps [@google-cloud/storage](https://github.com/googleapis/nodejs-storage) from 2.3.1 to 2.3.4.
- [Release notes](https://github.com/googleapis/nodejs-storage/releases)
- [Changelog](https://github.com/googleapis/nodejs-storage/blob/master/CHANGELOG.md)
- [Commits](googleapis/nodejs-storage@v2.3.1...v2.3.4)

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

Author: dependabot-support

package-lock.json

@@ -12,7 +12,7 @@
   },
   "dependencies": {
     "@google-cloud/logging-winston": "^0.9.0",
-    "@google-cloud/storage": "^2.3.0",
+    "@google-cloud/storage": "^2.3.4",
     "@sendgrid/mail": "^6.3.1",
     "bcrypt": "^3.0.0",
     "cookie-parser": "~1.4.3",