chore(deps): bump hardhat from 2.20.1 to 2.21.0

Bumps [hardhat](https://github.com/nomiclabs/hardhat) from 2.20.1 to 2.21.0.
- [Release notes](https://github.com/nomiclabs/hardhat/releases)
- [Commits](https://github.com/nomiclabs/hardhat/compare/hardhat@2.20.1...hardhat@2.21.0)

---
updated-dependencies:
- dependency-name: hardhat
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

cli/package.json

@@ -47,7 +47,7 @@
     "commander": "^12.0.0",
     "dotenv": "^16.4.5",
     "ethers": "^6.11.1",
-    "hardhat": "^2.20.1",
+    "hardhat": "^2.21.0",
     "maci-circuits": "^1.2.0",
     "maci-contracts": "^1.2.0",
     "maci-core": "^1.2.0",

contracts/package.json

@@ -70,7 +70,7 @@
     "@openzeppelin/contracts": "^4.8.0",
     "circomlibjs": "^0.1.7",
     "ethers": "^6.11.1",
-    "hardhat": "^2.20.1",
+    "hardhat": "^2.21.0",
     "maci-circuits": "^1.2.0",
     "maci-core": "^1.2.0",
     "maci-crypto": "^1.2.0",

integrationTests/package.json

@@ -24,7 +24,7 @@
     "@types/node": "^20.11.24",
     "chai": "^4.3.10",
     "chai-as-promised": "^7.1.1",
-    "hardhat": "^2.20.1",
+    "hardhat": "^2.21.0",
     "hardhat-artifactor": "^0.2.0",
     "hardhat-contract-sizer": "^2.0.3",
     "mocha": "^10.3.0",