Support for aarch64-linux

[pawelz]

aarch64-linux isn't supported because there is no biber for that platform.

Here is a branch that makes bazel-latex work for aarch64-linux but it is not ideal, as it removes biber for all platforms: https://github.com/pawelz/bazel-latex/tree/aarch64-linux

I am wondering if it would be worth the effort to remove it conditionally just for that one platform.