chore(ci): Add --skip-duplicate to NuGet push for idempotent re-runs

Author: agneszitte

.github/actions/nuget-org-publish/action.yml

@@ -19,5 +19,5 @@ runs:
   - name: NuGet.org Push
     shell: pwsh
     run: |
-        dotnet nuget push artifacts/*.nupkg -s https://api.nuget.org/v3/index.json -k "${{ inputs.token }}"
+        dotnet nuget push artifacts/*.nupkg -s https://api.nuget.org/v3/index.json -k "${{ inputs.token }}" --skip-duplicate
 

.github/actions/nuget-uno-publish/action.yml

@@ -24,4 +24,4 @@ runs:
     shell: pwsh
     run: |
         dotnet nuget add source https://pkgs.dev.azure.com/uno-platform/1dd81cbd-cb35-41de-a570-b0df3571a196/_packaging/unoplatformdev/nuget/v3/index.json -n "dev" --username az --password "${{ inputs.token }}" --store-password-in-clear-text
-        dotnet nuget push --api-key AZ -s dev artifacts/*.nupkg
+        dotnet nuget push --api-key AZ -s dev artifacts/*.nupkg --skip-duplicate