ci(deploy-preview.yaml): install cloud plugin (#212)

Signed-off-by: Vaughn Dice <vdice@akamai.com>

Author: vdice

.github/workflows/deploy-preview.yaml

@@ -16,6 +16,7 @@ jobs:
         uses: fermyon/actions/spin/setup@v1
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
+          plugins: cloud
 
       - name: Install npm packages
         run: |