Bump swiftlang/github-workflows/.github/workflows/soundness.yml from 0.0.8 to 0.0.9 (#2180)

Bumps [swiftlang/github-workflows/.github/workflows/soundness.yml](https://github.com/swiftlang/github-workflows) from 0.0.8 to 0.0.9.
- [Release notes](https://github.com/swiftlang/github-workflows/releases)
- [Commits](swiftlang/github-workflows@0.0.8...0.0.9)

---
updated-dependencies:
- dependency-name: swiftlang/github-workflows/.github/workflows/soundness.yml
  dependency-version: 0.0.9
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/pull_request.yml

@@ -75,7 +75,7 @@ jobs:
 
   soundness:
     name: Soundness
-    uses: swiftlang/github-workflows/.github/workflows/soundness.yml@0.0.8
+    uses: swiftlang/github-workflows/.github/workflows/soundness.yml@0.0.9
     with:
       # Pending https://github.com/swiftlang/vscode-swift/pull/1176
       license_header_check_enabled: false