Fix workflow dispatch for openproject-flavours

.github/workflows/continuous-delivery.yml

@@ -30,8 +30,9 @@ jobs:
           TOKEN: ${{ secrets.OPENPROJECT_CI_TOKEN }}
           REPOSITORY: opf/openproject-flavours
           WORKFLOW_ID: ci.yml
+          CORE_REF: ${{ github.ref }}
         run: |
           curl -i --fail -H"authorization: Bearer $TOKEN" \
             -XPOST -H"Accept: application/vnd.github.v3+json" \
             https://api.github.com/repos/$REPOSITORY/actions/workflows/$WORKFLOW_ID/dispatches \
-            -d '{"ref": "${{ github.ref }}"}'
+            -d '{"ref": "master", "inputs": { "ref" : "$CORE_REF" }}'