Try to fix cython 3 problems.

Author: Shyue Ping Ong

pymatgen/util/coord_cython.pyx

@@ -91,7 +91,7 @@ def pbc_shortest_vectors(lattice, fcoords1, fcoords2, mask=None, return_d2=False
 
     pbc = lattice.pbc
     cdef int n_pbc = sum(pbc)
-    cdef int n_pbc_im = 3 ** n_pbc
+    cdef int n_pbc_im = int(round(3 ** n_pbc))
 
     cdef np.float_t[:, ::1] frac_im
     cdef int i, j, k, l, I, J

requirements.txt

@@ -1,19 +1,19 @@
 numpy==1.24.3
 sympy==1.11.1
-requests==2.28.1
+requests==2.29.0
 monty==2022.9.9
-ruamel.yaml==0.17.21
+ruamel.yaml==0.17.32
 scipy==1.9.0
 tabulate==0.9.0
 matplotlib==3.5.2
 palettable==3.3.0
 spglib==2.0.2
-pandas==2.0.1
+pandas==2.0.3
 networkx==2.8.8
 plotly==5.11.0
 beautifulsoup4==4.12.2
 uncertainties==3.1.7
-Cython==0.29.32
+Cython==3.0.0
 pybtex==0.24.0
 mp-api==0.33.3
 tqdm==4.65.0