fix(deps): update dependency @types/react to v17.0.21 (#44)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

package.json

@@ -31,7 +31,7 @@
     "react-dom": ">=16.8.0"
   },
   "dependencies": {
-    "@types/react": "17.0.20",
+    "@types/react": "17.0.21",
     "@types/react-dom": "17.0.9",
     "@types/prismjs": "1.16.6",
     "prismjs": "1.25.0",