Bump pymatgen from 2025.4.20 to 2025.5.2

Bumps [pymatgen](https://github.com/materialsproject/pymatgen) from 2025.4.20 to 2025.5.2.
- [Release notes](https://github.com/materialsproject/pymatgen/releases)
- [Changelog](https://github.com/materialsproject/pymatgen/blob/master/docs/CHANGES.md)
- [Commits](materialsproject/pymatgen@v2025.4.20...v2025.5.2)

---
updated-dependencies:
- dependency-name: pymatgen
  dependency-version: 2025.5.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements.txt

@@ -1,4 +1,4 @@
-pymatgen==2025.4.20
+pymatgen==2025.5.2
 joblib==1.4.2
 ase==3.25.0
 seaborn==0.13.2