Update Directory.Packages.props (#339)

Bumped version of dependent `Antlr4BuildTasks` to resolve vulnerability. 

Fixes #338

Signed-off-by: Steven Maillet <smaillet@users.noreply.github.com>

Author: smaillet

Directory.Packages.props

@@ -36,7 +36,7 @@
         <PackageVersion Include="System.Linq.Async" Version="6.0.3" />
         <PackageVersion Include="Ubiquity.NET.LibLLVM" Version="20.1.8" />
         <PackageVersion Include="Ubiquity.NET.Versioning" Version="6.0.2-beta" />
-        <PackageVersion Include="Antlr4BuildTasks" Version="12.10.0" />
+        <PackageVersion Include="Antlr4BuildTasks" Version="12.11.0" />
         <PackageVersion Include="Antlr4.Runtime.Standard" Version="4.13.1" />
         <PackageVersion Include="OpenSoftware.DgmlBuilder" Version="2.1.0" />
         <PackageVersion Include="CppSharp" Version="1.1.5.3168" />