Bump flask from 2.0.1 to 2.3.2 in /sample-demo-flask-app

Bumps [flask](https://github.com/pallets/flask) from 2.0.1 to 2.3.2.
- [Release notes](https://github.com/pallets/flask/releases)
- [Changelog](https://github.com/pallets/flask/blob/main/CHANGES.rst)
- [Commits](pallets/flask@2.0.1...2.3.2)

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

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

Author: dependabot[bot]

sample-demo-flask-app/requirements.txt

@@ -1,4 +1,4 @@
-flask==2.0.1
+flask==2.3.2
 gunicorn==20.1.0
 requests
 codeguru_profiler_agent