Reclassify OFL as notice per cl/537072410 am: 8449e4b2e7 am: 876ac4993e am: d69f837ad8 am: c5deb32c5c am: 376a45a8a2

Original change: https://android-review.googlesource.com/c/platform/external/google-fonts/source-sans-pro/+/2611877

Change-Id: I61d721c9c38ec11c2b3f44ed33fc58c9b0177434
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>