Release Wasmtime 46.0.0 (#13696)

[automatically-tag-and-release-this-commit]

Co-authored-by: Wasmtime Publish <wasmtime-publish@users.noreply.github.com>

Author: wasmtime-publish

RELEASES.md

@@ -1,6 +1,6 @@
 ## 46.0.0
 
-Unreleased.
+Released 2026-06-22.
 
 ### Added