chore: update multicodec dep to stable version

Author: achingbrain

package.json

@@ -70,7 +70,7 @@
     "multiaddr": "^6.0.6",
     "multiaddr-to-uri": "^5.0.0",
     "multibase": "~0.6.0",
-    "multicodec": "~0.5.1",
+    "multicodec": "^1.0.0",
     "multihashes": "~0.4.14",
     "parse-duration": "^0.1.1",
     "peer-id": "~0.12.3",