v1.8.0-alpha

* `skip-ci` or `ci-skip` push option to skip CI during git push * `verbose-ci` or `ci-verbose` push option to report CI errors during push * fix for commit counting * allow downloading source archive tar balls in tags * fixes for spurious jetstream failures * fix aggressive blob caching * deprecate `KNOT_SERVER_SECRET` and move to `KNOT_SERVER_OWNER` * introduce XRPC API for all authenticated endpoints