Remove --experimental-vm-modules option when running jest.

I was getting 'ReferenceError: require is not defined' errors from jest since moving
the repo to TypeScript. Removing it allows the tests to run fine.

package.json

@@ -13,7 +13,7 @@
     "build:website": "yarn workspace @emoji-mart/website build",
     "prettier": "prettier --check .",
     "prettier:fix": "prettier --write .",
-    "test": "yarn node --experimental-vm-modules $(yarn bin jest)"
+    "test": "jest"
   },
   "devDependencies": {
     "@babel/core": "7.18.9",