chore(package): update buffer to version 5.4.2 (#1085)

* chore(package): update buffer to version 5.4.0

* chore: update buffer dep

Author: Alan Shaw

package.json

@@ -38,7 +38,7 @@
     "bignumber.js": "^9.0.0",
     "bl": "^3.0.0",
     "bs58": "^4.0.1",
-    "buffer": "^5.2.1",
+    "buffer": "^5.4.2",
     "cids": "~0.7.1",
     "concat-stream": "github:hugomrdias/concat-stream#feat/smaller",
     "debug": "^4.1.0",