Update flask requirement from ~=2.3.2 to ~=3.0.0

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@2.3.2...3.0.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -1,5 +1,5 @@
 aprslib==0.7.2
-flask~=2.3.2
+flask~=3.0.0
 haversine~=2.8.0
 humanize~=4.6.0
 meshtastic==2.2.10