Update flask requirement from ~=3.0.3 to ~=3.1.0

Updates the requirements on [flask](https://github.com/pallets/flask) to permit the latest version.
- [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
...

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

requirements.txt

@@ -1,6 +1,6 @@
 requests~=2.32.3
 folium~=0.17.0
-Flask~=3.0.3
+Flask~=3.1.0
 gunicorn~=23.0.0
 IPy~=1.1
 translate~=3.6.1