Bump pip from 22.3.1 to 23.3

Bumps [pip](https://github.com/pypa/pip) from 22.3.1 to 23.3.
- [Changelog](https://github.com/pypa/pip/blob/main/NEWS.rst)
- [Commits](pypa/pip@22.3.1...23.3)

---
updated-dependencies:
- dependency-name: pip
  dependency-type: direct:production
...

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

requirements.txt

@@ -1,4 +1,4 @@
-pip==22.3.1
+pip==23.3
 setuptools==66.1.1
 wheel==0.38.4
 zc.buildout==3.0.1