Upgrade rust/crates/tinytemplate to 1.2.1 am: a3bdae3ac7 am: 2043cb5371 am: 9be83c4515

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/tinytemplate/+/1662429

Change-Id: I80fbf2c40976c5524a1e2adf1c56cbdf08c02766