chore: bump flask from 3.0.1 to 3.0.2 in /integration/examples (#9297)

Bumps [flask](https://github.com/pallets/flask) from 3.0.1 to 3.0.2.
- [Release notes](https://github.com/pallets/flask/releases)
- [Changelog](https://github.com/pallets/flask/blob/main/CHANGES.rst)
- [Commits](pallets/flask@3.0.1...3.0.2)

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

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

integration/examples/buildpacks-python/requirements.txt

@@ -1 +1 @@
-Flask==3.0.1
+Flask==3.0.2