Bump numpy from 2.2.5 to 2.2.6 (#545)

Bumps [numpy](https://github.com/numpy/numpy) from 2.2.5 to 2.2.6.
- [Release notes](https://github.com/numpy/numpy/releases)
- [Changelog](https://github.com/numpy/numpy/blob/main/doc/RELEASE_WALKTHROUGH.rst)
- [Commits](numpy/numpy@v2.2.5...v2.2.6)

---
updated-dependencies:
- dependency-name: numpy
  dependency-version: 2.2.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

requirements.txt

@@ -1,5 +1,5 @@
 spglib==2.6.0
-numpy==2.2.5
+numpy==2.2.6
 scipy==1.15.2
 pymatgen==2025.4.24
 inflect==7.5.0