fix: correct PowerShell syntax for NuGet push

Author: Nonanti

.github/workflows/release.yml

@@ -81,8 +81,11 @@ jobs:
         if: success() && !contains(github.ref_name, '-')  # Skip pre-releases
         env:
           NUGET_API_KEY: ${{ secrets.NUGET_API_KEY }}
+        shell: pwsh
         run: |
-          dotnet nuget push "out/*.nupkg" `
-            --api-key "$env:NUGET_API_KEY" `
-            --source https://api.nuget.org/v3/index.json `
-            --skip-duplicate
+          foreach ($file in Get-ChildItem -Path out -Filter *.nupkg) {
+            dotnet nuget push $file.FullName `
+              --api-key "$env:NUGET_API_KEY" `
+              --source https://api.nuget.org/v3/index.json `
+              --skip-duplicate
+          }