Updating output packages for Metalama 2026.1.

Author: gfraiteur

src/PostSharp.Engineering.BuildTools/Dependencies/Definitions/MetalamaDependencies.V2026_1.cs

@@ -90,6 +90,8 @@ public MetalamaDependencyDefinition(
                     "Metalama.Extensions.DependencyInjection.ServiceLocator",
                     "Metalama.Extensions.Metrics",
                     "Metalama.Extensions.Multicast",
+                    "Metalama.Extensions.DiffEngine",
+                    "Metalama.Extensions.HtmlWriter",
                     "Metalama.Patterns.Caching",
                     "Metalama.Patterns.Caching.Aspects",
                     "Metalama.Patterns.Caching.Backend",