Update pip requirement from ~=23.0 to ~=23.1

Updates the requirements on [pip](https://github.com/pypa/pip) to permit the latest version.
- [Release notes](https://github.com/pypa/pip/releases)
- [Changelog](https://github.com/pypa/pip/blob/main/NEWS.rst)
- [Commits](pypa/pip@23.0...23.1.2)

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

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

requirements.txt

@@ -1,4 +1,4 @@
-pip~=23.0
+pip~=23.1
 voila~=0.3.6
 matplotlib~=3.6.3
 numpy~=1.24.3