chore(release): 1.0.0-alpha.78 [skip ci]

# [1.0.0-alpha.78](https://code.podlibre.org/podlibre/castopod-host/compare/v1.0.0-alpha.77...v1.0.0-alpha.78) (2021-12-15)

### Bug Fixes

* **import:** add extension when downloading file without + truncate slug if too long ([c5f18bb6](https://code.podlibre.org/podlibre/castopod-host/commit/c5f18bb6dc08a758ff735454bbe9cfa45a68c09b))