update changelog

CHANGELOG.md

@@ -5,6 +5,7 @@
 * Fix misaligned line numbers in source maps ([#3906](https://github.com/sveltejs/svelte/issues/3906))
 * Make setting a `tweened` store using `duration: 0` instantly update the value ([#4399](https://github.com/sveltejs/svelte/issues/4399))
 * Fix reactivity with imported values that are then mutated ([#4555](https://github.com/sveltejs/svelte/issues/4555))
+* Fix contextual dynamic `bind:this` inside `{#each}` block ([#4686](https://github.com/sveltejs/svelte/issues/4686))
 * Do not display a11y warning about missing `href` for `<a>` with `name` or `id` ([#4697](https://github.com/sveltejs/svelte/issues/4697))
 * Disable infinite loop guard inside generators ([#4698](https://github.com/sveltejs/svelte/issues/4698))
 * Display `a11y-invalid-attribute` warning for `href="javascript:..."` ([#4733](https://github.com/sveltejs/svelte/pull/4733))