Reverted previous changes in dependencies.

Author: gfraiteur

src/PostSharp.Engineering.BuildTools/Dependencies/Definitions/BusinessSystemsDependencies.cs

@@ -28,17 +28,11 @@ public BusinessSystemsDependencyDefinition( string dependencyName, bool isGitHub
 
     public static ProductFamily Family { get; } = new( "Business%20Systems", "1.0", DevelopmentDependencies.Family );
 
-    public static DependencyDefinition BusinessSystems { get; } = new BusinessSystemsDependencyDefinition( "BusinessSystems" )
-    {
-        Dependencies = [DevelopmentDependencies.PostSharpEngineering, PostSharpDependencies.V2025_1.PostSharp]
-    };
+    public static DependencyDefinition BusinessSystems { get; } = new BusinessSystemsDependencyDefinition( "BusinessSystems" );
 
     public static DependencyDefinition HelpBrowser { get; } = new BusinessSystemsDependencyDefinition( "HelpBrowser" );
 
-    public static DependencyDefinition PostSharpWeb { get; } = new BusinessSystemsDependencyDefinition( "PostSharpWeb" )
-    {
-        Dependencies = [DevelopmentDependencies.PostSharpEngineering, PostSharpDependencies.V2025_1.PostSharp]
-    };
+    public static DependencyDefinition PostSharpWeb { get; } = new BusinessSystemsDependencyDefinition( "PostSharpWeb" );
 
     public static DependencyDefinition MetalamaMarketplace { get; } = new BusinessSystemsDependencyDefinition( "MetalamaMarketplace", true );
 }