Bump numpy from 1.26.3 to 1.26.4

Bumps [numpy](https://github.com/numpy/numpy) from 1.26.3 to 1.26.4.
- [Release notes](https://github.com/numpy/numpy/releases)
- [Changelog](https://github.com/numpy/numpy/blob/main/doc/RELEASE_WALKTHROUGH.rst)
- [Commits](numpy/numpy@v1.26.3...v1.26.4)

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

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

requirements/requirements-test.txt

@@ -6,7 +6,7 @@ dynasor==1.1.1; platform_system != "Windows"
 GitPython==3.1.42
 gsd==3.2.1
 matplotlib>=3.0.0
-numpy==1.26.3
+numpy==1.26.4
 pillow>=8.0.0 --only-binary=pillow
 pytest==8.0.1
 pytest-cov==4.1.0