Bump axios from 1.6.8 to 1.7.4 in /demo_backend/functions (#658)

Bumps [axios](https://github.com/axios/axios) from 1.6.8 to 1.7.4.
- [Release notes](https://github.com/axios/axios/releases)
- [Changelog](https://github.com/axios/axios/blob/v1.x/CHANGELOG.md)
- [Commits](axios/axios@v1.6.8...v1.7.4)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

demo_backend/functions/package.json

@@ -17,7 +17,7 @@
         "@elastic/elasticsearch": "^8.13.0",
         "@google-cloud/firestore": "^6.8.0",
         "algoliasearch": "^4.23.2",
-        "axios": "1.6.8",
+        "axios": "1.7.4",
         "cors": "^2.8.5",
         "dotenv": "^16.4.5",
         "express": "^4.19.2",