chore(deps): bump flask from 0.12.1 to 2.2.5 in /test/examples/python

Bumps [flask](https://github.com/pallets/flask) from 0.12.1 to 2.2.5.
- [Release notes](https://github.com/pallets/flask/releases)
- [Changelog](https://github.com/pallets/flask/blob/main/CHANGES.rst)
- [Commits](pallets/flask@0.12.1...2.2.5)

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

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

test/examples/python/requirements.txt

@@ -1 +1 @@
-Flask==0.12.1
+Flask==2.2.5