chore: bump solc to 0.8.24

Author: jaybuidl

contracts/hardhat.config.ts

@@ -22,7 +22,7 @@ const accounts = process.env.PRIVATE_KEY ? [process.env.PRIVATE_KEY, ...sellerAc
 
 const config: HardhatUserConfig = {
   solidity: {
-    version: "0.8.18",
+    version: "0.8.24",
     settings: {
       viaIR: true,
       optimizer: {
@@ -92,7 +92,7 @@ const config: HardhatUserConfig = {
     },
     arbitrum: {
       chainId: 42161,
-      url: "https://arb1.arbitrum.io/rpc",
+      url: process.env.ARBITRUM_RPC ?? `https://arbitrum-mainnet.infura.io/v3/${process.env.INFURA_API_KEY}`,
       accounts,
       live: true,
       saveDeployments: true,

contracts/src/EscrowUniversal.sol

@@ -5,7 +5,7 @@
 /// @auditors: []
 /// @bounties: []
 
-pragma solidity 0.8.18;
+pragma solidity 0.8.24;
 
 import {IArbitrableV2, IArbitratorV2} from "@kleros/kleros-v2-contracts/arbitration/interfaces/IArbitrableV2.sol";
 import "@kleros/kleros-v2-contracts/arbitration/interfaces/IDisputeTemplateRegistry.sol";

contracts/src/EscrowView.sol

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MIT
 
-pragma solidity 0.8.18;
+pragma solidity 0.8.24;
 
 import {Strings} from "@openzeppelin/contracts/utils/Strings.sol";
 import {IERC20Metadata} from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";

contracts/src/interfaces/IEscrow.sol

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MIT
 
-pragma solidity 0.8.18;
+pragma solidity 0.8.24;
 
 import "./Types.sol";
 

contracts/src/interfaces/Types.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity 0.8.18;
+pragma solidity 0.8.24;
 
 import {IERC20} from "../libraries/SafeERC20.sol";
 

contracts/src/libraries/SafeERC20.sol

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: MIT
 // Adapted from https://github.com/OpenZeppelin/openzeppelin-contracts/blob/a7a94c77463acea95d979aae1580fb0ddc3b6a1e/contracts/token/ERC20/utils/SafeERC20.sol
 
-pragma solidity ^0.8.18;
+pragma solidity 0.8.24;
 
 import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 

contracts/src/test/ArbitratorMock.sol

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MIT
 
-pragma solidity 0.8.18;
+pragma solidity 0.8.24;
 
 import {IArbitrableV2, IArbitratorV2} from "@kleros/kleros-v2-contracts/arbitration/interfaces/IArbitrableV2.sol";
 import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

contracts/src/test/DisputeTemplateRegistryMock.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity 0.8.18;
+pragma solidity 0.8.24;
 
 import {IDisputeTemplateRegistry} from "@kleros/kleros-v2-contracts/arbitration/interfaces/IDisputeTemplateRegistry.sol";
 

contracts/src/test/TestERC20.sol

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MIT
 
-pragma solidity 0.8.18;
+pragma solidity 0.8.24;
 
 import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
 

contracts/test/EscrowUniversal.t.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-pragma solidity 0.8.18;
+pragma solidity 0.8.24;
 
 import {Test} from "forge-std/Test.sol";
 import {console} from "forge-std/console.sol"; // Import the console for logging