Downgrade delisted dep version

Author: o-l-a-v

src/code/Microsoft.PowerShell.PSResourceGet.csproj

@@ -22,7 +22,7 @@
     <PackageReference Include="NuGet.Packaging" Version="6.14.0" />
     <PackageReference Include="NuGet.ProjectModel" Version="6.14.0" />
     <PackageReference Include="NuGet.Protocol" Version="6.14.0" />
-    <PackageReference Include="PowerShellStandard.Library" Version="7.0.0-preview.1" />
+    <PackageReference Include="PowerShellStandard.Library" Version="5.1.1" />
     <PackageReference Include="System.Net.Http" Version="4.3.4" />
     <PackageReference Include="System.Security.Cryptography.Pkcs" Version="9.0.8" />
     <PackageReference Include="System.Text.Json" Version="9.0.8" />