m76: update readme
[![Build Status](https://dev.azure.com/pragmatrix-github/rust-skia/_apis/build/status/rust-skia.rust-skia?branchName=master)](https://dev.azure.com/pragmatrix-github/rust-skia/_build/latest?definitionId=2&branchName=master)
-Skia Submodule Status: chrome/m75 ([pending changes][skiapending]).
+Skia Submodule Status: chrome/m76 ([pending changes][skiapending]).
-[skiapending]: https://github.com/google/skia/compare/3a2e3e75232d225e6f5e7c3530458be63bbb355a...chrome/m75
+[skiapending]: https://github.com/google/skia/compare/93a738962269e435fabed960952b7c5373f0eeff...chrome/m76
## Goals
