Fix invalid require-trusted-types-for CSP directive

require-trusted-types-for only accepts 'script'; emitting 'none'
produced an invalid directive that browsers rejected. Omit the
directive entirely to leave Trusted Types unenforced (needed for
WebAuthn). Bump version to 0.16.1.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

config/initializers/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Clinch
-  VERSION = "0.16.0"
+  VERSION = "0.16.1"
 end