chore: speed up regex (#11922)

Svelte 4 version of #11918

.changeset/cyan-bears-refuse.md

@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+chore: speed up regex

packages/svelte/src/compiler/preprocess/index.js

@@ -253,9 +253,9 @@ function stringify_tag_attributes(attributes) {
 }
 
 const regex_style_tags =
-	/<!--[^]*?-->|<style((?:\s+[^=>'"\/]+=(?:"[^"]*"|'[^']*'|[^>\s]+)|\s+[^=>'"\/]+)*\s*)(?:\/>|>([\S\s]*?)<\/style>)/g;
+	/<!--[^]*?-->|<style((?:\s+[^=>'"\/\s]+=(?:"[^"]*"|'[^']*'|[^>\s]+)|\s+[^=>'"\/\s]+)*\s*)(?:\/>|>([\S\s]*?)<\/style>)/g;
 const regex_script_tags =
-	/<!--[^]*?-->|<script((?:\s+[^=>'"\/]+=(?:"[^"]*"|'[^']*'|[^>\s]+)|\s+[^=>'"\/]+)*\s*)(?:\/>|>([\S\s]*?)<\/script>)/g;
+	/<!--[^]*?-->|<script((?:\s+[^=>'"\/\s]+=(?:"[^"]*"|'[^']*'|[^>\s]+)|\s+[^=>'"\/\s]+)*\s*)(?:\/>|>([\S\s]*?)<\/script>)/g;
 
 /**
  * Calculate the updates required to process all instances of the specified tag.