chore: fix getArtifactPath flaky test (#9339)

Author: grandizzy

testdata/default/cheats/GetArtifactPath.t.sol

@@ -13,25 +13,15 @@ contract GetArtifactPathTest is DSTest {
         DummyForGetArtifactPath dummy = new DummyForGetArtifactPath();
         bytes memory dummyCreationCode = type(DummyForGetArtifactPath).creationCode;
 
-        string memory root = vm.projectRoot();
         string memory path = vm.getArtifactPathByCode(dummyCreationCode);
-
-        string memory expectedPath =
-            string.concat(root, "/out/default/GetArtifactPath.t.sol/DummyForGetArtifactPath.json");
-
-        assertEq(path, expectedPath);
+        assertTrue(vm.contains(path, "/out/default/GetArtifactPath.t.sol/DummyForGetArtifactPath.json"));
     }
 
     function testGetArtifactPathByDeployedCode() public {
         DummyForGetArtifactPath dummy = new DummyForGetArtifactPath();
         bytes memory dummyRuntimeCode = address(dummy).code;
 
-        string memory root = vm.projectRoot();
         string memory path = vm.getArtifactPathByDeployedCode(dummyRuntimeCode);
-
-        string memory expectedPath =
-            string.concat(root, "/out/default/GetArtifactPath.t.sol/DummyForGetArtifactPath.json");
-
-        assertEq(path, expectedPath);
+        assertTrue(vm.contains(path, "/out/default/GetArtifactPath.t.sol/DummyForGetArtifactPath.json"));
     }
 }