Update samtools

[niemasd]

Updated comment:
A new version of samtools was just released, and I see that one of the features is that samtools depth was rewritten to be faster and more memory efficient. That's not a bottleneck of our pipeline, but it would still be good to update at some point (though not urgent):

https://github.com/samtools/samtools/releases/tag/1.13
Original comment:
The pipeline currently uses samtools 1.11, but samtools 1.12 was recently released:

https://github.com/samtools/samtools/releases/tag/1.12

Not urgent at all, but it would be good to update to samtools 1.12 at some point in the future

[AmandaBirmingham]

@niemasd Is there a particular reason it would be good to update? I am inclined to stick with the existing version until the regression tests are in place and accepted ...

[niemasd]

No particular reason, and I agree that all tool versions should generally remain as-is until regression tests and other relevant tests are in place and accepted. Once everything is 100% functional and ready for production, then I think it may be worth exploring updating samtools for future versions of the pipeline

I just wanted to make this GitHub Issue while it was on my mind