Bump flask from 3.0.2 to 3.0.3 in /src/collectors

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](pallets/flask@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] <[email protected]>

src/collectors/requirements.txt

@@ -2,7 +2,7 @@ beautifulsoup4==4.12.3
 bleach==6.1.0
 dateparser==1.2.0
 feedparser==6.0.11
-Flask==3.0.2
+Flask==3.0.3
 Flask-Cors==4.0.1
 Flask-RESTful==0.3.10
 gevent==24.2.1