Bump shortid from 2.2.14 to 2.2.15

Bumps [shortid](https://github.com/dylang/shortid) from 2.2.14 to 2.2.15.
- [Release notes](https://github.com/dylang/shortid/releases)
- [Changelog](https://github.com/dylang/shortid/blob/master/CHANGELOG.md)
- [Commits](dylang/shortid@2.2.14...2.2.15)

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

package.json

@@ -71,7 +71,7 @@
   "dependencies": {
     "@types/superagent": "^4.1.4",
     "delay": "^4.3.0",
-    "shortid": "^2.2.14",
+    "shortid": "^2.2.15",
     "superagent": "^5.2.1"
   },
   "peerDependencies": {