Support performing OpenSSL::Digest::MD4 in openSSL 3 by loading legac…

…y provider

openSSL3 doesn't support MD4 which means any installation with ntlm on openSSL3 using the challenge will be breaking. Hence the loading
of the provider. I wonder if its possible to move away from MD4 altogether?

lib/net/ntlm.rb

@@ -146,6 +146,10 @@ def ntlm_hash(password, opt = {})
         unless opt[:unicode]
           pwd = EncodeUtil.encode_utf16le(pwd)
         end
+
+        # OpenSSL 3 Support
+        OpenSSL::Provider.load("legacy") if defined?(OpenSSL::Provider)
+
         OpenSSL::Digest::MD4.digest pwd
       end