change solidity version to 0.8.19

Author: Naokiakazawa

contracts/GameItem.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: UNLICENSED
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.19;
 
 import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
 import "@openzeppelin/contracts/utils/Counters.sol";

foundry.toml

@@ -1,5 +1,5 @@
 [profile.default]
-solc = '0.8.20'
+solc = '0.8.19'
 via_ir = true
 src = 'contracts'
 out = 'out'

hardhat.config.ts

@@ -8,7 +8,7 @@ const mnemonic: string =
     : "test test test test test test test test test test test junk";
 
 const config: HardhatUserConfig = {
-  solidity: "0.8.20",
+  solidity: "0.8.19",
   defaultNetwork: "hardhat",
   networks: {
     hardhat: {

test/foundry/GameItem.t.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: UNLICENSED
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.19;
 
 import "forge-std/Test.sol";