build(deps): bump flask from 0.12.1 to 2.2.5 in /examples/python (#247)

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] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

examples/python/requirements.txt

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