chore(deps): bump flask in /packages/python/examples/metrics_django

Bumps [flask](https://github.com/pallets/flask) from 3.0.3 to 3.1.3.
- [Release notes](https://github.com/pallets/flask/releases)
- [Changelog](https://github.com/pallets/flask/blob/main/CHANGES.rst)
- [Commits](pallets/flask@3.0.3...3.1.3)

---
updated-dependencies:
- dependency-name: flask
  dependency-version: 3.1.3
  dependency-type: direct:production
...

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

Author: dependabot[bot]

packages/python/examples/metrics_django/requirements.txt

@@ -3,7 +3,7 @@ certifi==2024.7.4
 chardet==5.2.0
 click==8.1.7
 Django==4.2.18
-Flask==3.0.3
+Flask==3.1.3
 idna==3.7
 itsdangerous==2.2.0
 Jinja2==3.1.6