Update known_good.json

Updated for latest version of MoltenVK

Author: richard-lunarg

scripts/known_good.json

@@ -15,7 +15,7 @@
  "sub_dir": "MoltenVK",
  "build_dir": "MoltenVK",
  "install_dir": "MoltenVK",
- "commit": "v1.2.11",
+ "commit": "v1.3.0",
  "custom_build": [
  "./fetchDependencies --macos",
  "xcodebuild -project MoltenVKPackaging.xcodeproj GCC_PREPROCESSOR_DEFINITIONS='$GCC_PREPROCESSOR_DEFINITIONS MVK_CONFIG_LOG_LEVEL=1' -scheme \"MoltenVK Package (macOS only)\" build"