feat: upgrade ethers from 5.7.2 to 6.8.0

Snyk has created this PR to upgrade ethers from 5.7.2 to 6.8.0.

See this package in npm:
https://www.npmjs.com/package/ethers

See this project in Snyk:
https://app.snyk.io/org/woodpile37/project/f9f1a542-e77b-401b-9d83-577aad2ba722?utm_source=github&utm_medium=referral&page=upgrade-pr

assets/eip-5773/package.json

@@ -24,7 +24,7 @@
     "eslint-plugin-node": "^11.1.0",
     "eslint-plugin-prettier": "^4.2.1",
     "eslint-plugin-promise": "^6.0.0",
-    "ethers": "^5.6.9",
+    "ethers": "^6.8.0",
     "hardhat": "^2.12.2",
     "hardhat-contract-sizer": "^2.6.1",
     "hardhat-gas-reporter": "^1.0.8",