v2.9.0

What's Changed

Restore ability to specify SSH Configuration property by @mike-weiner in https://github.com/basecamp/kamal/pull/1688
Ensure global CLI quiet flag is respected by @mike-weiner in https://github.com/basecamp/kamal/pull/1687
Add example of rails credentials:fetch to secrets template by @MatheusRich in https://github.com/basecamp/kamal/pull/1624
Enable cache-from support for GHA cache options by @martinzamuner in https://github.com/basecamp/kamal/pull/1599
Fix GH action security warnings by @djmb in https://github.com/basecamp/kamal/pull/1699
Prevent OS Command Injection in Passbolt adapter (CWE-78) by @NiceGuy720 in https://github.com/basecamp/kamal/pull/1697
Vfs on GitHub actions by @djmb in https://github.com/basecamp/kamal/pull/1706
DNS retries so lookup failures don't interrupt deploys by @jeremy in https://github.com/basecamp/kamal/pull/1707
Use VFS storage driver locally by @djmb in https://github.com/basecamp/kamal/pull/1720
Disable the SSH eviction thread in tests by @djmb in https://github.com/basecamp/kamal/pull/1721
Make environment variables optional for tagged hosts by @nbgoodall in https://github.com/basecamp/kamal/pull/1714
Make the secrets path configurable by @djmb in https://github.com/basecamp/kamal/pull/1722
Set a new container name for app exec by @lewispb in https://github.com/basecamp/kamal/pull/1705

@MatheusRich made their first contribution in https://github.com/basecamp/kamal/pull/1624
@martinzamuner made their first contribution in https://github.com/basecamp/kamal/pull/1599
@NiceGuy720 made their first contribution in https://github.com/basecamp/kamal/pull/1697
@nbgoodall made their first contribution in https://github.com/basecamp/kamal/pull/1714

Full Changelog: https://github.com/basecamp/kamal/compare/v2.8.2...v2.9.0