science/cgribex: Update to 2.3.1

Changes:

2024-10-13 Uwe Schulzweida
2.3.0:

• Removed dtypes.h

2.2.0:

2.1.1:

• pwr6_minmax_val_double_unrolled6: remove register attribute

2.1.0:

• Replaced CDI timebase by julian_date

2.0.2:

• Replaced CDI timebase by julian_date

2.0.1:

• Store result of CGRIBEX_FPSCALE to double
• avx_encode_array_2byte_double: Enforce availability of vectorization in function.