feat: update hardhat toolbox for ethers v6

contracts/topos-core/AdminMultisigBase.sol

@@ -119,7 +119,7 @@ contract AdminMultisigBase is EternalStorage {
     }
 
     function _getAdmin(uint256 adminEpoch, uint256 index) internal view returns (address) {
-        return getAddress(_getAdminKey(adminEpoch, index));
+        return getAddressStorage(_getAdminKey(adminEpoch, index));
     }
 
     function _getAdminCount(uint256 adminEpoch) internal view returns (uint256) {

contracts/topos-core/EternalStorage.sol

@@ -23,7 +23,9 @@ contract EternalStorage {
         return _stringStorage[key];
     }
 
-    function getAddress(bytes32 key) public view returns (address) {
+    // Renamed getAddress to getAddressStorage to prevent overriding ethers v6
+    // getAddress BaseContract method
+    function getAddressStorage(bytes32 key) public view returns (address) {
         return _addressStorage[key];
     }
 

contracts/topos-core/SubnetRegistrator.sol

@@ -32,6 +32,13 @@ contract SubnetRegistrator is Initializable, Ownable {
     /// @notice Subnet removal event
     event SubnetRemoved(SubnetId subnetId);
 
+    /// @notice Contract initializer
+    /// @dev Can only be called once
+    /// @param admin address of the admin
+    function initialize(address admin) public initializer {
+        _transferOwnership(admin);
+    }
+
     /// @notice Check if the subnet is already registered
     /// @param subnetId FROST public key of a subnet
     function subnetExists(SubnetId subnetId) external view returns (bool) {
@@ -49,13 +56,6 @@ contract SubnetRegistrator is Initializable, Ownable {
         return SubnetId.wrap(subnetSet.keyAtIndex(index));
     }
 
-    /// @notice Contract initializer
-    /// @dev Can only be called once
-    /// @param admin address of the admin
-    function initialize(address admin) public initializer {
-        _transferOwnership(admin);
-    }
-
     /// @notice Register a new subnet
     /// @param chainId subnet network ID
     /// @param currencySymbol currencySymbol for a subnet currency

contracts/topos-core/ToposCore.sol

@@ -38,6 +38,17 @@ contract ToposCore is IToposCore, AdminMultisigBase, Initializable {
         _disableInitializers();
     }
 
+    /// @notice Contract initializer
+    /// @dev Can only be called once
+    /// @param adminAddresses list of admins
+    /// @param newAdminThreshold number of admins required to approve a call
+    function initialize(address[] memory adminAddresses, uint256 newAdminThreshold) public initializer {
+        // NOTE: Admin epoch is incremented to easily invalidate current admin-related state.
+        uint256 newAdminEpoch = _adminEpoch() + uint256(1);
+        _setAdminEpoch(newAdminEpoch);
+        _setAdmins(newAdminEpoch, adminAddresses, newAdminThreshold);
+    }
+
     /// @notice Sets the subnet ID
     /// @param _networkSubnetId The subnet ID of the subnet this contract is to be deployed on
     function setNetworkSubnetId(SubnetId _networkSubnetId) external onlyAdmin {
@@ -125,17 +136,6 @@ contract ToposCore is IToposCore, AdminMultisigBase, Initializable {
         }
     }
 
-    /// @notice Contract initializer
-    /// @dev Can only be called once
-    /// @param adminAddresses list of admins
-    /// @param newAdminThreshold number of admins required to approve a call
-    function initialize(address[] memory adminAddresses, uint256 newAdminThreshold) public initializer {
-        // NOTE: Admin epoch is incremented to easily invalidate current admin-related state.
-        uint256 newAdminEpoch = _adminEpoch() + uint256(1);
-        _setAdminEpoch(newAdminEpoch);
-        _setAdmins(newAdminEpoch, adminAddresses, newAdminThreshold);
-    }
-
     /// @notice Checks if a certificate exists on the ToposCore contract
     /// @param certId The Certificate ID
     function certificateExists(CertificateId certId) public view returns (bool) {
@@ -172,7 +172,7 @@ contract ToposCore is IToposCore, AdminMultisigBase, Initializable {
 
     /// @notice Get the ToposCore implmentation address
     function implementation() public view override returns (address) {
-        return getAddress(KEY_IMPLEMENTATION);
+        return getAddressStorage(KEY_IMPLEMENTATION);
     }
 
     /// @notice Get the certificate for the provided certificate ID

contracts/topos-core/ToposCoreProxy.sol

@@ -23,7 +23,7 @@ contract ToposCoreProxy is EternalStorage {
 
     // solhint-disable-next-line no-complex-fallback
     fallback() external payable {
-        address implementation = getAddress(KEY_IMPLEMENTATION);
+        address implementation = getAddressStorage(KEY_IMPLEMENTATION);
 
         // solhint-disable-next-line no-inline-assembly
         assembly {