feat(core): remove react 16 from peer dependencies

Author: PixeledCode

.danger/__fixtures__/mock_package/package.json

@@ -11,8 +11,8 @@
     "@twilio-paste/design-tokens": "^8.0.0",
     "@twilio-paste/styling-library": "^1.0.0",
     "@twilio-paste/types": "^3.1.1",
-    "react": "^16.8.6 || ^17.0.2",
-    "react-dom": "^16.8.6 || ^17.0.2"
+    "react": "^17.0.2",
+    "react-dom": "^17.0.2"
   },
   "devDependencies": {
     "@twilio-paste/animation-library": "^0.3.7",

README.md

@@ -88,8 +88,8 @@ When a package has a peer dependency on another internal package in the mono rep
 {
   "name": "button",
   "peerDependencies": {
-    "react": "^16.8.6",
-    "react-dom": "^16.8.6"
+    "react": "^17.0.2",
+    "react-dom": "^17.0.2"
     "@twilio-paste/box": "^0.0.1",
     "@twilio-paste/theme": "^0.0.1",
     "@twilio-paste/design-tokens": "^0.0.1",