CI - don't send message as it may contain newline and break the json.

[ci skip]

.github/workflows/website.yml

@@ -44,7 +44,7 @@ jobs:
           token: ${{ secrets.DISPATCHER_TOKEN }}
           repository: weitjong/urho3d-website
           event-type: build
-          client-payload: '{"ref": "${{ github.ref }}", "sha": "${{ github.sha }}", "message": "${{ github.event.head_commit.message }}"}'
+          client-payload: '{"sha": "${{ github.sha }}"}'
         if: steps.whatchanged.outputs.skip == '0'
 
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