chore(deps): update dependency bittorrent-protocol to v4 (#54)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -18,7 +18,7 @@
   },
   "devDependencies": {
     "@webtorrent/semantic-release-config": "1.0.8",
-    "bittorrent-protocol": "3.5.5",
+    "bittorrent-protocol": "4.0.1",
     "nyc": "15.1.0",
     "semantic-release": "19.0.5",
     "standard": "*",