LDAP: Fix attempted modification of frozen hash (#39571)

app/models/concerns/user/ldap_authenticable.rb

@@ -58,7 +58,7 @@ module User::LdapAuthenticable
       if [:simple_tls, :start_tls].include?(Devise.ldap_method)
         opts[:encryption] = {
           method: Devise.ldap_method,
-          tls_options: OpenSSL::SSL::SSLContext::DEFAULT_PARAMS.tap { |options| options[:verify_mode] = OpenSSL::SSL::VERIFY_NONE if Devise.ldap_tls_no_verify },
+          tls_options: OpenSSL::SSL::SSLContext::DEFAULT_PARAMS.dup.tap { |options| options[:verify_mode] = OpenSSL::SSL::VERIFY_NONE if Devise.ldap_tls_no_verify },
         }
       end