feat(test): better bats tests, install from latest tag and then update from master

[brokenpip3]

Changes

prerequisite of #972

Submitter Checklist

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• [ ] Includes tests (if functionality changed/added)
• [ ] Includes docs (if user facing)
• [ ] Commit messages follow commit message best practices

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Reviewer Notes

If API changes are included, additive changes must be approved by at least two OWNERS and backwards incompatible changes must be approved by more than 50% of the OWNERS.

Release Notes

Describe any user facing changes here, or delete this block.

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- API changes
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