Utilize checksum on vaultwarden.css

Prerequisites • I have searched the existing Closed _AND_ Open [Issues]( _AND_ [Discussions]( • I have searched and read the [documentation]( Vaultwarden Support String 1. Currently vaultwarden.css is loaded withaout any cache buster. 2. It means that doing changes requires to instruct users to do hard refresh of cache. 3. Would be nice if it was appended to stylesheet with chekcsum as query string / filename if possible. Vaultwarden Build Version 1.35.1 Deployment method Official Container Image Custom deployment method _No response_ Reverse Proxy haproxy Host/Server Operating System Linux Operating System Version Debian 13 Clients Web Vault, Desktop Client Version _No response_ Steps To Reproduce 1. Go to vault page 2. Check network 3. See vaultwarden.css without any cache busting info Expected Result new version without hard refresh. Actual Result Old version without hard refresh. Logs Screenshots or Videos _No response_ Additional Contex…