fix jtr_postgres_fast too

the JtR hash cracker for postgres hashes now uses
the new PostgresMD5 class for finding it's hashes

MSP-12244

Author: David Maloney

modules/auxiliary/analyze/jtr_postgres_fast.rb

@@ -108,11 +108,12 @@ def wordlist_file
 
   def hash_file
     hashlist = Rex::Quickfile.new("hashes_tmp")
-    Metasploit::Credential::NonreplayableHash.joins(:cores).where(metasploit_credential_cores: { workspace_id: myworkspace.id }, jtr_format: 'raw-md5,postgres').each do |hash|
+    Metasploit::Credential::PostgresMD5.joins(:cores).where(metasploit_credential_cores: { workspace_id: myworkspace.id }).each do |hash|
       hash.cores.each do |core|
         user = core.public.username
         @username_set << user
         hash_string = "#{hash.data}"
+        hash_string.gsub!(/^md5/, '')
         id = core.id
         hashlist.puts "#{user}:#{hash_string}:#{id}:"
       end