Update Xcode's shell script to execute the required Gradle task in the project's root directory

Author: ShreckYe

demo/iosApp/iosApp.xcodeproj/project.pbxproj

@@ -174,7 +174,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "if [ \"YES\" = \"$OVERRIDE_KOTLIN_BUILD_IDE_SUPPORTED\" ]; then\n  echo \"Skipping Gradle build task invocation due to OVERRIDE_KOTLIN_BUILD_IDE_SUPPORTED environment variable set to \\\"YES\\\"\"\n  exit 0\nfi\ncd \"$SRCROOT/..\"\n../gradlew :demo:embedAndSignAppleFrameworkForXcode\n";
+			shellScript = "if [ \"YES\" = \"$OVERRIDE_KOTLIN_BUILD_IDE_SUPPORTED\" ]; then\n  echo \"Skipping Gradle build task invocation due to OVERRIDE_KOTLIN_BUILD_IDE_SUPPORTED environment variable set to \\\"YES\\\"\"\n  exit 0\nfi\ncd \"$SRCROOT/../..\"\n./gradlew :demo:embedAndSignAppleFrameworkForXcode\n";
 		};
 /* End PBXShellScriptBuildPhase section */