testci is currently failing now that package versions have been [bumped to `3.0.0-alpha.0`](ae40299 (diff-2d72bdead8afa0798d18995311992d684348a694c2d5e214e8e4d2b6153e4821)). Alpha and beta version numbers have existed before, but only as recently as `v2.1.0-alpha.0` and `v2.7.0-beta.3` respectively, both of which preceded [the assertions in question](7ddb023c8d).
This PR updates those assertions to accept `alpha` or `beta` package versions, in addition to the already-supported `rc` and stable (non-suffixed) package versions.
