Update flask-restx requirement from ~=1.2.0 to ~=1.3.0

Updates the requirements on [flask-restx](https://github.com/python-restx/flask-restx) to permit the latest version.
- [Release notes](https://github.com/python-restx/flask-restx/releases)
- [Changelog](https://github.com/python-restx/flask-restx/blob/master/CHANGELOG.rst)
- [Commits](python-restx/flask-restx@1.2.0...1.3.0)

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

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

requirements.txt

@@ -1,5 +1,5 @@
 Flask==3.0.0
-flask_restx~=1.2.0
+flask_restx~=1.3.0
 Werkzeug==3.0.1
 gevent~=23.9.1
 pg8000==1.30.3