Update dev-dependencies

Author: wooorm

package.json

@@ -42,8 +42,8 @@
     "negate": "^1.0.0",
     "nyc": "^11.0.0",
     "rehype-parse": "^4.0.0",
-    "remark-parse": "^3.0.0",
-    "remark-stringify": "^3.0.0",
+    "remark-parse": "^4.0.0",
+    "remark-stringify": "^4.0.0",
     "tape": "^4.6.3",
     "unified": "^6.1.0",
     "unist-builder": "^1.0.2",