ci: Disable license header check in CI for now.

Author: scottmarchant

.github/workflows/pull_request.yml

@@ -9,7 +9,7 @@ jobs:
     name: Soundness
     uses: swiftlang/github-workflows/.github/workflows/soundness.yml@main
     with:
-      license_header_check_project_name: "Swift.org"
+      license_header_check_enabled: false
       api_breakage_check_enabled: false
 
   tests: