[upd] pypi: Bump flask from 3.0.2 to 3.0.3

Bumps [flask](https://github.com/pallets/flask) from 3.0.2 to 3.0.3.
- [Release notes](https://github.com/pallets/flask/releases)
- [Changelog](https://github.com/pallets/flask/blob/main/CHANGES.rst)
- [Commits](https://github.com/pallets/flask/compare/3.0.2...3.0.3)

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

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

requirements.txt

@@ -1,7 +1,7 @@
 certifi==2024.2.2
 babel==2.14.0
 flask-babel==4.0.0
-flask==3.0.2
+flask==3.0.3
 jinja2==3.1.3
 lxml==5.2.1
 pygments==2.17.2