chore: configure some actions to be skipped for forks

[vdovhanych]

This is just a simple change.

This will configure some actions to be skipped for forks, as the actions that are changed here depend on the main repository or the configured secrets, so it makes no sense to run them for forks. This will also remove failed cron jobs from the forks, rest of the actions that don't depend on anything are left untouched.