Widen peer dependency range of use-subscription (#20225)

Author: billyjanitsch

packages/use-subscription/package.json

@@ -19,7 +19,7 @@
     "object-assign": "^4.1.1"
   },
   "peerDependencies": {
-    "react": "^17.0.0"
+    "react": "^16.8.0 || ^17.0.0"
   },
   "devDependencies": {
     "rxjs": "^5.5.6"