[LSC] Add LOCAL_LICENSE_KINDS to external/google-fonts/zilla-slab am: 776443897f am: 5b376c16ce

Original change: https://android-review.googlesource.com/c/platform/external/google-fonts/zilla-slab/+/1588638

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I1d8f885a2af001602cd12716ed248c3f46a3f71d