Make 1.8.1 release (#1056)

The goreleaser action was broken so I cannot release the 1.8.0 tag.

I've just re-labelled 1.8.0 -> 1.8.1 in the changelog (since there's no
actual difference between them), but let me know if you would prefer to
have both.

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Co-authored-by: Rex P <106129829+another-rex@users.noreply.github.com>