Bump pip in /scripts/docker/examples/python/assets/hello_world

Bumps [pip](https://github.com/pypa/pip) from 23.3 to 25.3.
- [Changelog](https://github.com/pypa/pip/blob/main/NEWS.rst)
- [Commits](pypa/pip@23.3...25.3)

---
updated-dependencies:
- dependency-name: pip
  dependency-version: '25.3'
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

scripts/docker/examples/python/assets/hello_world/requirements.txt

@@ -5,7 +5,7 @@ Flask==2.3.3
 itsdangerous==2.1.2
 Jinja2==3.1.6
 MarkupSafe==2.1.3
-pip==23.3
+pip==25.3
 setuptools==78.1.1
 Werkzeug==3.0.6
 wheel==0.41.1