fix(dag): replace custom dag walk with multiformats/traversal (#3950)

Ref: multiformats/js-multiformats#127

Co-authored-by: achingbrain <[email protected]>

Author: rvagg

package.json

@@ -68,7 +68,7 @@
     "it-last": "^1.0.4",
     "merge-options": "^3.0.4",
     "multiaddr": "^10.0.0",
-    "multiformats": "^9.4.13",
+    "multiformats": "^9.5.1",
     "parse-duration": "^1.0.0",
     "stream-to-it": "^0.2.2",
     "uint8arrays": "^3.0.0"