Auto merge of #3438 - JohnTitor:unignore-aarch64-linux-android, r=JohnTitor

Unignore `aarch64-linux-android`

Let's see if the NDK update changes something.

Author: bors

.github/workflows/bors.yml

@@ -125,9 +125,7 @@ jobs:
       max-parallel: 12
       matrix:
         target: [
-          # FIXME: Mysterious failures in CI, see
-          # https://github.com/rust-lang/libc/issues/2081
-          # aarch64-linux-android,
+          aarch64-linux-android,
           aarch64-unknown-linux-gnu,
           aarch64-unknown-linux-musl,
           arm-linux-androideabi,