Rely on the digest class defined by Rails

Rails applications can override the digest class through
configuration settings. Further, Rails does this by default in
versions suchs as 7 where it defaults to SHA256. Using
ActiveSupport::Digest directly skips over this setting causing
it to always be MD5 in the current state. This breaks in modern
environments MD5 is disabled such as FIPS environments.

Signed-off-by: Eric D. Helms <ericdhelms@gmail.com>

Author: ehelms

lib/angular-rails-templates/engine.rb

@@ -37,7 +37,7 @@ class Engine < ::Rails::Engine
 
       # Sprockets Cache Busting
       # If ART's version or settings change, expire and recompile all assets
-      hash_digest = defined?(ActiveSupport::Digest) ? ActiveSupport::Digest : Digest::MD5
+      hash_digest = app.config.active_support.hash_digest_class || ActiveSupport::Digest.hash_digest_class
       app.config.assets.version = [
         app.config.assets.version,
         'ART',