Escaping double quotes inside the JSON quoted string am: a77fc883cb am: 360837fe43

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

Change-Id: I02ba1c831f382b05157a3b5c230bde57ac1a8633
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>