chore: use toplevel out/ for importing Morpho bytecode

foundry.toml

@@ -4,7 +4,7 @@ test = "test/forge"
 evm_version = "paris"
 fs_permissions = [
     { access = "read", path = "./config/"},
-    { access = "read", path = "./lib/morpho-blue/out/"}
+    { access = "read", path = "./out/"}
 ]
 
 [profile.default.rpc_endpoints]

src/mocks/MorphoImport.sol

@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+pragma solidity >=0.0.0;
+// Force foundry to compile Morpho Blue even though it's not imported by Metamorpho or by the tests.
+// Morpho Blue will be compiled with its own solidity version.
+// The resulting bytecode is then loaded by BaseTest.sol.
+
+import "../../lib/morpho-blue/src/Morpho.sol";

test/forge/helpers/BaseTest.sol

@@ -52,8 +52,7 @@ contract BaseTest is Test {
     address internal MORPHO_OWNER = makeAddr("MorphoOwner");
     address internal MORPHO_FEE_RECIPIENT = makeAddr("MorphoFeeRecipient");
 
-    IMorpho internal morpho =
-        IMorpho(deployCode("lib/morpho-blue/out/Morpho.sol/Morpho.json", abi.encode(MORPHO_OWNER)));
+    IMorpho internal morpho = IMorpho(deployCode("Morpho.sol", abi.encode(MORPHO_OWNER)));
     ERC20Mock internal loanToken = new ERC20Mock("loan", "B");
     ERC20Mock internal collateralToken = new ERC20Mock("collateral", "C");
     OracleMock internal oracle = new OracleMock();