Echo xcodebuild Version In Test Script

Adds a line that echos the xcodebuild version in the test script, to make it easier to diagnose version mismatches between the test runner and local Xcode versions.

Author: thecoolwinter

.github/scripts/test_app.sh

@@ -8,6 +8,7 @@ elif [ $1 = "arm" ]; then
     ARCH="arm64"
 fi
 
+echo "Building with Xcode: $(xcodebuild -version)"
 echo "Building with arch: ${ARCH}"
 echo "SwiftLint Version: $(swiftlint --version)"