Disable broken CI configurations in pull_request.yml

`AudioWorkstation/Guest` triggers an assertion in 6.2 release

Author: MaxDesiatov

.github/workflows/pull_request.yml

@@ -10,6 +10,7 @@ jobs:
     uses: swiftlang/github-workflows/.github/workflows/swift_package_test.yml@main
     with:
       enable_embedded_wasm_sdk_build: true
+      wasm_exclude_swift_versions: '[{"swift_version": "nightly-6.2"}]'
       enable_linux_checks: false
       enable_macos_checks: false
       enable_windows_checks: false