Hackney has SSRF allowlist bypass in hackney_url:normalize/2 via percent-encoded host

Summary hackneyurl:normalize/2 URL-decodes the host component of a parsed URL, but the caller's SSRF allowlist runs before normalization using OTP's uristring:parse/1 and inet:parseaddress/1, neither of which decodes percent-escapes in hostnames. A URL like http://%31%32%37%2E%30%2E%30%2E%31/...