Escaping double quotes inside the JSON quoted string am: b934b632a7

Original change: https://android-review.googlesource.com/c/platform/external/python/cryptography/+/2152253

Change-Id: I1e50a6fd886716bb35311b4a430ce2ec2d27d615
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>