Merge "Make libproc_macro_nested available to DnsResolver" am: b861406a39 am: 39842e470b am: 98bc756a90

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/proc-macro-nested/+/1742036

Change-Id: Ia38467fd728bcdc89a8176af06a856c7db57cfa4