Pin max version of samtools and bcftools for snippy

[mvdbeek]

Until tseemann/snippy#344 is resolved.

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[dpryan79]

@bioconda-bot please fetch artifacts

[BiocondaBot]

Package(s) built on CircleCI are ready for inspection:

Arch	Package	Repodata
noarch	snippy-4.4.5-1.tar.bz2	repodata.json

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You may also use conda to install these:

• For packages on noarch:

conda install -c https://93675-42372094-gh.circle-artifacts.com/0/tmp/artifacts/packages <package name>

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Docker image(s) built:

Package	Tag	Install with docker
snippy	4.4.5--1	show curl "https://93675-42372094-gh.circle-artifacts.com/0/tmp/artifacts/images/snippy%3A4.4.5--1.tar.gz" | gzip -dc | docker load

[dpryan79]

@bioconda-bot please merge

Thanks @mvdbeek!

[BiocondaBot]

I will attempt to upload artifacts and merge this PR. This may take some time, please have patience.