Update CI-Dependabot.yml

Author: wei18

.github/workflows/CI-Dependabot.yml

@@ -18,7 +18,7 @@ jobs:
           - ubuntu-latest
           # - macos-latest #Fix: The macos-latest workflow label currently uses the macOS 12 runner image.
           # - macos-13
-        swift: ["5.9"]
+        swift: [5, 6]
     runs-on: ${{ matrix.os }}
     timeout-minutes: 60
     steps: