Bump pymatgen from 2023.8.10 to 2023.9.2

Bumps [pymatgen](https://github.com/materialsproject/pymatgen) from 2023.8.10 to 2023.9.2.
- [Release notes](https://github.com/materialsproject/pymatgen/releases)
- [Changelog](https://github.com/materialsproject/pymatgen/blob/master/CHANGES.md)
- [Commits](materialsproject/pymatgen@v2023.8.10...v2023.9.2)

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

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

setup.py

@@ -36,13 +36,13 @@
         'scipy==1.11.2',  # ase already requires scipy
     ],
     extras_require={
-        "grainboundary": ['aimsgb==1.0.3', 'pymatgen==2023.8.10'],
+        "grainboundary": ['aimsgb==1.0.3', 'pymatgen==2023.9.2'],
         "pyscal": ['pyscal2==2.10.18'],
         "nglview": ['nglview==3.0.6'],
         "plotly": ['plotly==5.16.1'],
         "clusters": ['scikit-learn==1.3.0'],
         "symmetry": ['spglib==2.0.2'],
-        "surface": ['spglib==2.0.2', 'pymatgen==2023.8.10'],
+        "surface": ['spglib==2.0.2', 'pymatgen==2023.9.2'],
         "phonopy": ['phonopy==2.20.0', 'spglib==2.0.2'],
         "pyxtal": ['pyxtal==0.5.9']
     },