build(deps): bump flask from 3.0.3 to 3.1.0 in /client (#572)

Bumps [flask](https://github.com/pallets/flask) from 3.0.3 to 3.1.0.
- [Release notes](https://github.com/pallets/flask/releases)
- [Changelog](https://github.com/pallets/flask/blob/main/CHANGES.rst)
- [Commits](pallets/flask@3.0.3...3.1.0)

---
updated-dependencies:
- dependency-name: flask
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

client/requirements.txt

@@ -1,5 +1,5 @@
 flask==2.2.5;python_version<"3.8"
-flask==3.0.3;python_version>="3.8"
+flask==3.1.0;python_version>="3.8"
 python-dotenv==0.21.1;python_version<"3.8"
 python-dotenv==1.0.1;python_version>="3.8"
 rq==2.0.0