build(deps): bump pip from 23.2.1 to 23.3 in /docker/py

Bumps [pip](https://github.com/pypa/pip) from 23.2.1 to 23.3.
- [Changelog](https://github.com/pypa/pip/blob/main/NEWS.rst)
- [Commits](pypa/pip@23.2.1...23.3)

---
updated-dependencies:
- dependency-name: pip
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

docker/py/renku-requirements/requirements.txt

@@ -1,5 +1,5 @@
 renku==2.7.0
-pip==23.2.1
+pip==23.3
 sentry-sdk==1.31.0
 setuptools>=65.5.1
 wheel==0.41.2