Skip API breakage check for now

Author: natecook1000

.github/workflows/pull_request.yml

@@ -39,7 +39,7 @@ jobs:
       format_check_container_image: swiftlang/swift:nightly-6.2-jammy
       shell_check_enabled: true
       yamllint_check_enabled: true
-      api_breakage_check_enabled: true
+      api_breakage_check_enabled: false # doesn't allow skipping prebuilt swift-syntax binary
       api_breakage_check_container_image: swiftlang/swift:nightly-6.2-jammy
       docs_check_enabled: false  # nightly container has issues installing yq
       docs_check_container_image: swiftlang/swift:nightly-6.2-jammy