Upgrade fonttools to 4.17.1 am: 5ad7e67a4f am: 84244ce063 am: 79cf2010c5

Original change: https://android-review.googlesource.com/c/platform/external/fonttools/+/1500983

Change-Id: I4b38a31efce3ffaad98917190ac1b67b1ba98cdb