Pi-hole v6.1.4

What's Changed

• Fix issue where web interface cannot run gravity by @PromoFaux in https://github.com/pi-hole/pi-hole/pull/6345
• Fix pihole api command by not setting the some variabes as readonly by @PromoFaux in https://github.com/pi-hole/pi-hole/pull/6346

Full Changelog: https://github.com/pi-hole/pi-hole/compare/v6.1.3...v6.1.4