chore: release version v28.0.1

Author: achingbrain

CHANGELOG.md

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+## [28.0.1](https://github.com/ipfs/aegir/compare/v28.0.0...v28.0.1) (2020-10-20)
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+### Bug Fixes
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+* remove which, revert to available mocha ([5b77754](https://github.com/ipfs/aegir/commit/5b77754baaa82a197ad5e741c6be8413fdb76f63))
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+
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 # [28.0.0](https://github.com/ipfs/aegir/compare/v27.0.0...v28.0.0) (2020-10-20)