Update gitleaks.yaml

Author: Edberg-Vasan

.github/workflows/gitleaks.yaml

@@ -23,7 +23,7 @@ jobs:
      - name: Install the report tool packages
        if: steps.gitleaks.outcome != 'success'
        run: |
-           echo $GITHUB_WORKSPACE
+           echo $env:GITHUB_WORKSPACE
            nuget install "Syncfusion.Email" -source https://nexus.syncfusioninternal.com/repository/nuget-hosted/ -ExcludeVersion
            echo "Package Installed"
            dir "D:\a\connecting-databases-to-aspnetcore-grid\connecting-databases-to-aspnetcore-grid\Syncfusion.Email\lib\netcoreapp3.1"