refactor(core): utilize @sanity/diff-patch (#563)

Author: ricokahler

packages/core/package.json

@@ -59,6 +59,7 @@
     "@sanity/client": "^7.2.1",
     "@sanity/comlink": "^3.0.4",
     "@sanity/diff-match-patch": "^3.2.0",
+    "@sanity/diff-patch": "^6.0.0",
     "@sanity/message-protocol": "^0.12.0",
     "@sanity/mutate": "^0.12.4",
     "@sanity/types": "^3.83.0",