Fix the string comparison issue

Author: gty404

src/iceberg/util/string_util.h

@@ -46,8 +46,7 @@ class ICEBERG_EXPORT StringUtils {
   }
 
   static bool EqualsIgnoreCase(const std::string& a, const std::string& b) {
-    return a.size() == b.size() &&
-           std::equal(a.begin(), a.end(), b.begin(), [](char ca, char cb) {
+    return a.size() == b.size() && std::ranges::equal(a, b, [](char ca, char cb) {
              return std::tolower(ca) == std::tolower(cb);
            });
   }