1.45.0

• Add application/ubjson with extension .ubj
• Add image/avif with extension .avif
• Add image/ktx2 with extension .ktx2
• Add extension .dbf to application/vnd.dbf
• Add extension .rar to application/vnd.rar
• Add extension .td to application/urc-targetdesc+xml
• Add new upstream MIME types
• Fix extension of application/vnd.apple.keynote to be .key