update changelog

Author: dummdidumm

Diff for: CHANGELOG.md

@@ -8,6 +8,7 @@
 * Add `ComponentType` and `ComponentProps` convenience types ([#6770](https://github.com/sveltejs/svelte/pull/6770))
 * Fix empty component not properly destroyed ([#7488](https://github.com/sveltejs/svelte/issues/7488))
 * Add CSS at-rule `@layer` support ([#7504](https://github.com/sveltejs/svelte/issues/7504))
+* Export `CompileOptions` from `svelte/compiler` ([#7658](https://github.com/sveltejs/svelte/pull/7658))
 
 ## 3.48.0