Auto merge of #137181 - cuviper:stable-next, r=cuviper

Prepare Rust 1.85.0 stable release

This includes a relnotes sync and a few last-minute backports:

- change `literal_string_with_formatting_args` lint category to nursery #136982
- Update the reference for reverted `extended_varargs_abi_support` #136934
- fix musl's CVE-2025-26519 #137127

r? cuviper