Auto merge of #95639 - pietroalbini:pa-1.60.0-stable, r=pietroalbini

Prepare 1.60.0 stable release

This PR bumps the channel to stable, and backports the following PRs:

* Miscellaneous release notes updates.
* https://github.com/rust-lang/rust/pull/94817
* https://github.com/rust-lang/rust/pull/95256

r? `@ghost`