[automerger skipped] Make libproc_macro_nested available to DnsResolver am: cb7d3504eb -s ours

am skip reason: Merged-In I4f89060c1959b9feff425c611d54308cc55a66aa with SHA-1 561cf37e88 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/rust/crates/proc-macro-nested/+/15066900

Change-Id: I78f057358680a35d71d34c2670cc0a30bb355113