Reclassify OFL as notice per cl/537072410 am: 1a85bfcdd8 am: 9d3077f3c6 am: 348ec68707 am: ee9dd21f2e

Original change: https://android-review.googlesource.com/c/platform/external/google-fonts/arbutus-slab/+/2611417

Change-Id: I19d62c3ed5025c1b2c2caa4afba73564f0c666b9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>