CI: (deps): Bump numpy from 1.26.2 to 1.26.3 in /ci

Bumps [numpy](https://github.com/numpy/numpy) from 1.26.2 to 1.26.3.
- [Release notes](https://github.com/numpy/numpy/releases)
- [Changelog](https://github.com/numpy/numpy/blob/main/doc/RELEASE_WALKTHROUGH.rst)
- [Commits](numpy/numpy@v1.26.2...v1.26.3)

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

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

Author: dependabot[bot]

ci/requirements.txt

@@ -1,5 +1,5 @@
 matplotlib==3.8.2
-numpy==1.26.2
+numpy==1.26.3
 pandas==2.1.4
 pooch==1.8.0
 pint==0.23