Upgrade proc-macro2 to 1.0.54 am: 9ed73418c7 am: aae936a18a am: 2873cb66cf am: 704d77a60e

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/proc-macro2/+/2514439

Change-Id: I415ef5359cac6c2d1c28eb4f12d5fc615d76438b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>