v4.15.0

What's Changed

• Bump github.com/spf13/cobra from 1.2.1 to 1.3.0 (#326) @dependabot
• Revamp ha core options subcommand (#322) @agners
• Add base URL implicitly (#318) @agners
• Add backup to core and add-ons update (#328) @ludeeus
• Update version sample to a stable version (#323) @jansepke
• Add available_updates command to supervisor (#319) @ludeeus
• Fix typo in backup restore (#320) @AlecRust
• Fix backups_restore example (#321) @AlecRust
• Use consts for timeouts in all cases (#317) @agners
• Bump github.com/go-resty/resty/v2 from 2.6.0 to 2.7.0 (#316) @dependabot
• Bump actions/checkout from 2.3.5 to 2.4.0 (#315) @dependabot
• audio: remove trailing " from help example (#314) @gregkh
• Bump actions/checkout from 2.3.4 to 2.3.5 (#313) @dependabot
• Update go to 1.17 (#312) @ludeeus