Update test refs

Author: kdy1

crates/swc_ecma_preset_env/tests/fixtures/corejs3/usage-regexp/output.mjs

@@ -3,7 +3,7 @@ import "core-js/modules/es.regexp.exec.js";
 import "core-js/modules/es.regexp.to-string.js";
 var a = RegExp("(?<year>\\d{4})-(?<month>\\d{2})-(?<day>\\d{2})", "u");
 var b = RegExp(".", "s");
-var c = new RegExp(".", "imsuy");
+var c = RegExp(".", "imsuy");
 console.log(a.unicode);
 console.log(b.dotAll);
 console.log(c.sticky);