zstd

[j23414]

Description of proposed changes

Use zstd compression instead of xz and gzip to be consistent with:

• nextstrain/ncov-ingest#345

Related issue(s)

Related to:

• https://github.com/nextstrain/ncov-ingest/pull/345

Related PRs:

• https://github.com/nextstrain/fauna/pull/127
• https://github.com/nextstrain/dengue/pull/5
• https://github.com/nextstrain/measles/pull/7

Testing

• [x] Checks pass
• [x] full run on AWS passes

Assuming the reviewer has the proper keys, could run manually via:

git clone https://github.com/nextstrain/zika.git
cd zika
git checkout zstd
nextstrain build .
nextstrain view auspice

The final build should look similar to:

• https://nextstrain.org/zika