fix(deps): update dependency bencode to v4 (#236)

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

Author: renovate[bot]

package.json

@@ -19,7 +19,7 @@
     "is-file": false
   },
   "dependencies": {
-    "bencode": "^3.1.1",
+    "bencode": "^4.0.0",
     "block-iterator": "^1.1.1",
     "fast-readable-async-iterator": "^1.1.1",
     "is-file": "^1.0.0",