Minimize pragma for MultiSignerERC7913Weighted.sol (#5778)

Signed-off-by: Hadrien Croubois <hadrien.croubois@gmail.com>

Author: ernestognw

contracts/utils/cryptography/signers/MultiSignerERC7913Weighted.sol

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: MIT
 // OpenZeppelin Contracts (last updated v5.4.0-rc.1) (utils/cryptography/signers/MultiSignerERC7913Weighted.sol)
 
-pragma solidity ^0.8.27;
+pragma solidity ^0.8.26;
 
 import {SafeCast} from "../../math/SafeCast.sol";
 import {MultiSignerERC7913} from "./MultiSignerERC7913.sol";