fix: revert deps upgrades (#8)

Author: Alan Shaw

package-lock.json

@@ -28,9 +28,10 @@
   ],
   "dependencies": {
     "@multiformats/blake2": "^1.0.13",
-    "@multiformats/murmur3": "^2.1.3",
+    "@multiformats/murmur3": "^1.1.3",
     "@multiformats/sha3": "^2.0.15",
-    "multiformats": "^11.0.2"
+    "multiformats": "9.9.0",
+    "uint8arrays": "^3.1.1"
   },
   "devDependencies": {
     "@ipld/car": "^5.1.0",

package.json

@@ -15,7 +15,7 @@ import {
   keccak512
 // @ts-expect-error types not well published
 } from '@multiformats/sha3'
-import { equals } from 'multiformats/bytes'
+import { equals } from 'uint8arrays'
 
 /**
  * @typedef {object} Block