Upgrade sec1 to 0.7.3 am: 3b65df0b6f am: 9a875ec6d9 am: 0ca0749343

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/sec1/+/2877561

Change-Id: I17ea101a4c21b09f7f6938fd3b0a8d784e46a3da
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>