chore(deps): update dependency hardhat to v3

Author: renovate[bot]

package.json

@@ -38,7 +38,7 @@
 		"eslint-config-prettier": "^10.1.5",
 		"eslint-plugin-prettier": "^5.5.1",
 		"ethers": "^6.14.4",
-		"hardhat": "^2.25.0",
+		"hardhat": "^3.0.0",
 		"prettier": "^3.6.2",
 		"prettier-plugin-solidity": "^2.0.0",
 		"solhint": "^5.2.0",