Swift: disable integration tests on macOS for now

Also, add swift workflow to code owned by the C team

.github/workflows/swift-integration-tests.yml

@@ -18,7 +18,9 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os : [ubuntu-20.04, macos-latest]
+        os:
+          - ubuntu-20.04
+#          - macos-latest  TODO
     steps:
       - uses: actions/checkout@v3
       - uses: ./.github/actions/fetch-codeql

CODEOWNERS

@@ -42,3 +42,4 @@ WORKSPACE.bazel @github/codeql-ci-reviewers
 /.github/workflows/js-ml-tests.yml @github/codeql-ml-powered-queries-reviewers
 /.github/workflows/ql-for-ql-* @github/codeql-ql-for-ql-reviewers
 /.github/workflows/ruby-* @github/codeql-ruby
+/.github/workflows/swift-* @github/codeql-c