chore: update publish config

Author: idleberg

.github/workflows/publish.yml

@@ -50,10 +50,12 @@ jobs:
         with:
           dependencies: false
           pat: ${{ secrets.OVSX_PERSONAL_ACCESS_TOKEN }}
+          skipDuplicate: true
 
       - name: Publish to Visual Studio Marketplace
         uses: HaaLeo/publish-vscode-extension@v2
         with:
           dependencies: false
           pat: ${{ secrets.VSCE_PERSONAL_ACCESS_TOKEN }}
           registryUrl: https://marketplace.visualstudio.com
+          skipDuplicate: true