chore(deps): bump @nomicfoundation/hardhat-ethers from 3.1.0 to 4.0.2

Bumps [@nomicfoundation/hardhat-ethers](https://github.com/NomicFoundation/hardhat/tree/HEAD/v-next/ethers) from 3.1.0 to 4.0.2.
- [Release notes](https://github.com/NomicFoundation/hardhat/releases)
- [Commits](https://github.com/NomicFoundation/hardhat/commits/@nomicfoundation/[email protected]/v-next/ethers)

---
updated-dependencies:
- dependency-name: "@nomicfoundation/hardhat-ethers"
  dependency-version: 4.0.2
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

apps/coordinator/package.json

@@ -45,7 +45,7 @@
     "@nestjs/swagger": "^11.2.0",
     "@nestjs/throttler": "^6.4.0",
     "@nestjs/websockets": "^11.1.6",
-    "@nomicfoundation/hardhat-ethers": "^3.1.0",
+    "@nomicfoundation/hardhat-ethers": "^4.0.2",
     "@nomicfoundation/hardhat-toolbox": "^6.1.0",
     "@redis/client": "^5.8.3",
     "@zerodev/ecdsa-validator": "5.4.9",

apps/relayer/package.json

@@ -37,7 +37,7 @@
     "@nestjs/swagger": "^11.2.0",
     "@nestjs/throttler": "^6.4.0",
     "@nestjs/websockets": "^11.1.6",
-    "@nomicfoundation/hardhat-ethers": "^3.1.0",
+    "@nomicfoundation/hardhat-ethers": "^4.0.2",
     "@nomicfoundation/hardhat-toolbox": "^6.1.0",
     "class-transformer": "^0.5.1",
     "class-validator": "^0.14.2",

packages/contracts/package.json

@@ -225,7 +225,7 @@
     "@maci-protocol/core": "^3.0.0",
     "@maci-protocol/crypto": "^3.0.0",
     "@maci-protocol/domainobjs": "^3.0.0",
-    "@nomicfoundation/hardhat-ethers": "^3.1.0",
+    "@nomicfoundation/hardhat-ethers": "^4.0.2",
     "@nomicfoundation/hardhat-toolbox": "^6.1.0",
     "@nomicfoundation/hardhat-verify": "^2.1.0",
     "@openzeppelin/contracts": "^5.3.0",