Bump numpy from 1.23.3 to 1.23.4 in /requirements (#738)

Bumps [numpy](https://github.com/numpy/numpy) from 1.23.3 to 1.23.4.
- [Release notes](https://github.com/numpy/numpy/releases)
- [Changelog](https://github.com/numpy/numpy/blob/main/doc/RELEASE_WALKTHROUGH.rst)
- [Commits](https://github.com/numpy/numpy/compare/v1.23.3...v1.23.4)

---
updated-dependencies:
- dependency-name: numpy
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements/requirements.txt

@@ -1,4 +1,4 @@
-numpy == 1.23.3
+numpy == 1.23.4
 scipy == 1.9.2
 matplotlib == 3.6.1
 cvxpy == 1.2.1