Escaping double quotes inside the JSON quoted string am: a77fc883cb

Original change: https://android-review.googlesource.com/c/platform/external/google-fonts/rubik/+/2151738

Change-Id: I74d618ce2f60e9623668f1e6175cedb46fd32e87
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>