Release Wasmtime 45.0.0 (#13416)

* Release Wasmtime 45.0.0

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

* Update RELEASES.md

---------

Co-authored-by: Wasmtime Publish <wasmtime-publish@users.noreply.github.com>
Co-authored-by: Pat Hickey <p.hickey@f5.com>

Author: wasmtime-publish

RELEASES.md

@@ -1,6 +1,6 @@
 ## 45.0.0
 
-Unreleased.
+Released 2026-05-21.
 
 ### Added