Update TEST_MAPPING am: b06b014550 am: 53ea2fc26d am: 3f4f0dfa56

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/form_urlencoded/+/2106891

Change-Id: I9e87e3d784a1aade9ee4bae72d3bdfb330108366
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>