DEV: Fix i18n deprecation warnings

DEV: Fix i18n deprecation warnings

diff --git a/lib/i18n/i18n_interpolation_keys_finder.rb b/lib/i18n/i18n_interpolation_keys_finder.rb
index 6b0fff0..ab92624 100644
--- a/lib/i18n/i18n_interpolation_keys_finder.rb
+++ b/lib/i18n/i18n_interpolation_keys_finder.rb
@@ -2,7 +2,8 @@
 
 class I18nInterpolationKeysFinder
   def self.find(text)
-    keys = text.scan(Regexp.union(I18n::INTERPOLATION_PATTERN, /\{\{(\w+)\}\}/))
+    pattern = Regexp.union([*I18n.config.interpolation_patterns, /\{\{(\w+)\}\}/])
+    keys = text.scan(pattern)
     keys.flatten!
     keys.compact!
     keys.uniq!

GitHub sha: 92b24485