Attempt to fix is_dict_value build errors

Author: mpretty-cyro

include/session/config/base.hpp

@@ -39,7 +39,8 @@ static constexpr bool is_dict_subtype = is_one_of<T, config::scalar, config::set
 /// True for a dict_value or any of the types containable within a dict value
 template <typename T>
 static constexpr bool is_dict_value =
-        is_dict_subtype<T> || is_one_of<T, dict_value, int64_t, std::string>;
+        is_dict_subtype<T> ||
+        is_one_of<T, dict_value, int64_t, std::string, std::chrono::sys_seconds>;
 
 /// Our current config state
 enum class ConfigState : int {