Upgrade rust/crates/plotters-backend to 0.3.0 am: 8dcf71e9d0

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/plotters-backend/+/1662598

Change-Id: Ia2abf8ca9f628d15bc67b5c0d4d77eb99af2578b