v4.3.0

What's Changed

• Drop unused dependency on activemodel by @sambostock in #336
• Use × as close button instead of letter X by @luiscobot in #338
• Always permit IPv4-mapped IPv6 loopback addresses by @zunda in #342
• Fix CI by @fatkodima in #345
• Fix compatiblity with latest rails by @fatkodima in #344