Use a more permissive regex to pull out the logbox name value

Co-authored-by: Julien Voisin <[email protected]>

Author: sfewer-r7

modules/auxiliary/admin/misc/brother_default_admin_auth_bypass_cve_2024_51978.rb

@@ -351,7 +351,7 @@ def validate_password(password)
       return Metasploit::Model::Login::Status::UNABLE_TO_CONNECT
     end
 
-    unless res.body =~ /input type="password" id="LogBox" name="([a-zA-Z0-9]+)"/
+    unless res.body =~ /input type="password" id="LogBox" name="([^"]+)"/
       vprint_error('Failed to extract login form LogBox name.')
       return Metasploit::Model::Login::Status::UNABLE_TO_CONNECT
     end