OMP method being used is now deprecated

[kmanpearl]

I have not investigated the source, but I get the following warning message every time I generate embeddings:

OMP: Info #276: omp_set_nested routine deprecated, please use omp_set_max_active_levels instead

[RemyLau]

Caused by upstream from numba

• OMP omp_set_nested deprecated warning in 0.49rc1 numba/numba#5520
• Threading backend using omp_set_nested which is deprecated in OpenMP 5? numba/numba#5275