chore(release): 1.0.0-alpha.30 [skip ci]

# [1.0.0-alpha.30](https://code.podlibre.org/podlibre/castopod/compare/v1.0.0-alpha.29...v1.0.0-alpha.30) (2020-12-21)

### Features

* **rss:** update monetization tag so that it meets PodcastIndex requirements ([4c7ecbee](https://code.podlibre.org/podlibre/castopod/commit/4c7ecbee83950e5f9f2482cedaab18a1ac9bfc9e))