Bump flask-cors from 4.0.1 to 5.0.0 in /engine

Bumps [flask-cors](https://github.com/corydolphin/flask-cors) from 4.0.1 to 5.0.0.
- [Release notes](https://github.com/corydolphin/flask-cors/releases)
- [Changelog](https://github.com/corydolphin/flask-cors/blob/main/CHANGELOG.md)
- [Commits](corydolphin/flask-cors@4.0.1...5.0.0)

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

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

engine/requirements.txt

@@ -6,7 +6,7 @@ beautifulsoup4==4.12.3
 duckdb==1.1.2
 eld==1.0.6
 Flask==3.0.3
-Flask-Cors==4.0.2
+Flask-Cors==5.0.0
 flask[async]==3.0.3
 gensim==4.3.3
 lxml==5.2.2