fix(deps): update dependency merkletreejs to ^0.4.0 (#599)

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

Author: renovate[bot]

package-lock.json

@@ -34,7 +34,7 @@
   "types": "lib/index.d.ts",
   "dependencies": {
     "ethers": "^6.9.0",
-    "merkletreejs": "^0.3.11"
+    "merkletreejs": "^0.4.0"
   },
   "devDependencies": {
     "@nomicfoundation/hardhat-toolbox": "^5.0.0",