Update flask requirement from ~=3.0.1 to ~=3.0.3 (#139)

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@3.0.1...3.0.3)

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

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

requirements.txt

@@ -2,7 +2,7 @@ NetLink~=0.1
 flask-mqtt
 pyroute2~=0.7.12
 PyYAML~=6.0.1
-Flask~=3.0.1
+Flask~=3.0.3
 waitress~=2.1.2
 
 # Common