Align HELM_REGEXP pattern to support paths consistently

Co-authored-by: kbukum1 <171620528+kbukum1@users.noreply.github.com>

Author: Copilot

docker/lib/dependabot/shared/utils/helpers.rb

@@ -6,7 +6,7 @@
 module Dependabot
   module Shared
     module Utils
-      HELM_REGEXP = /^values(?:\.[\w-]+)?\.ya?ml$/i
+      HELM_REGEXP = /(^|\/)values(?:\.[\w-]+)?\.ya?ml$/i
 
       extend T::Sig