fix(deps): update dependency ikvm to 8.15.0

| datasource | package | from   | to     |
| ---------- | ------- | ------ | ------ |
| nuget      | IKVM    | 8.14.0 | 8.15.0 |

Author: renovate[bot]

Directory.Packages.props

@@ -9,7 +9,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageVersion Include="IKVM" Version="8.14.0" />
+    <PackageVersion Include="IKVM" Version="8.15.0" />
     <PackageVersion Include="Validation" Version="2.6.68" />
   </ItemGroup>