Try to build for Linux on ARM64

Author: philss

.github/workflows/release.yml

@@ -19,6 +19,8 @@ jobs:
         job:
           - { target: arm-unknown-linux-gnueabihf , os: ubuntu-20.04 , use-cross: true }
           - { target: aarch64-unknown-linux-gnu   , os: ubuntu-20.04 , use-cross: true }
+          - { target: aarch64-unknown-linux-musl  , os: ubuntu-20.04 , use-cross: true }
+          - { target: aarch64-unknown-linux-gnu   , os: ubuntu-20.04 , use-cross: true }
           - { target: aarch64-apple-darwin        , os: macos-11      }
           - { target: x86_64-apple-darwin         , os: macos-11      }
           - { target: x86_64-unknown-linux-gnu    , os: ubuntu-20.04  }