Changes before error encountered

Co-authored-by: benbalter <282759+benbalter@users.noreply.github.com>

Author: Copilot

lib/jekyll-github-metadata/value.rb

@@ -34,7 +34,7 @@ def render
 
       def to_liquid
         case render
-        when nil, true, false, Hash, String, Numeric, Array
+        when nil, true, false, Hash, String, Numeric, Array, Time
           value
         else
           to_json