Description

So as not to slow down code reviewing process around BUILD.bazel and *.bzl files due to style issues, let's see if we can continuously run buildifier in GitHub Actions to catch new lint errors.

Steps to reproduce

Steps to reproduce the behavior:

1. Push a commit that contains some lint issues in BUILD.bazel and/or *.bzl
2. Check GitHub Action result

Expected behavior

You can see new lint issues in BUILD.bazel and/or *.bzl after the step 2.

Actual behavior

There is currently no lint check for BUILD.bazel and/or *.bzl.

Version or commit-id

8c8a446