updating solidity version of ERC20Mock

test/mocks/ERC20Mock.sol

@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: MIT
+pragma solidity 0.8.25;
+
+import { ERC20 } from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
+
+contract ERC20Mock is ERC20 {
+    constructor(
+        string memory name,
+        string memory symbol,
+        address initialAccount,
+        uint256 initialBalance
+    )
+        payable
+        ERC20(name, symbol)
+    {
+        _mint(initialAccount, initialBalance);
+    }
+
+    function mint(address account, uint256 amount) public {
+        _mint(account, amount);
+    }
+
+    function burn(address account, uint256 amount) public {
+        _burn(account, amount);
+    }
+
+    function transferInternal(address from, address to, uint256 value) public {
+        _transfer(from, to, value);
+    }
+
+    function approveInternal(address owner, address spender, uint256 value) public {
+        _approve(owner, spender, value);
+    }
+}