update node to version 10 as 8 is no longer LTS

Author: thomasgrz

package.json

@@ -5,7 +5,7 @@
   "main": "dist/index.js",
   "module": "dist/@testing-library/react.esm.js",
   "engines": {
-    "node": ">=8"
+    "node": ">=10"
   },
   "scripts": {
     "prebuild": "rimraf dist",
@@ -85,4 +85,4 @@
     "url": "https://github.com/testing-library/react-testing-library/issues"
   },
   "homepage": "https://github.com/testing-library/react-testing-library#readme"
-}
+}