chore(deps): bump axios from 1.13.1 to 1.15.0

Bumps [axios](https://github.com/axios/axios) from 1.13.1 to 1.15.0.
- [Release notes](https://github.com/axios/axios/releases)
- [Changelog](https://github.com/axios/axios/blob/v1.x/CHANGELOG.md)
- [Commits](axios/axios@v1.13.1...v1.15.0)

---
updated-dependencies:
- dependency-name: axios
  dependency-version: 1.15.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

backend/package.json

@@ -72,7 +72,7 @@
     "@slack/web-api": "^6.7.2",
     "analytics-node": "^6.2.0",
     "aws-sdk": "2.814.0",
-    "axios": "^0.27.2",
+    "axios": "^0.31.0",
     "bcrypt": "5.0.0",
     "body-parser": "^1.20.1",
     "bufferutil": "^4.0.7",