Update dependency Microsoft.Build.Tasks.Core to v18

Author: renovate[bot]

build/_build.csproj

@@ -14,7 +14,7 @@
   <ItemGroup>
     <PackageReference Include="Azure.Identity" Version="1.17.1" />
     <PackageReference Include="CP.Nuke.BuildTools" Version="1.0.94" />
-    <PackageReference Include="Microsoft.Build.Tasks.Core" Version="17.14.28" />
+    <PackageReference Include="Microsoft.Build.Tasks.Core" Version="18.0.2" />
     <PackageReference Include="Nerdbank.GitVersioning" Version="3.9.50" />
     <PackageReference Include="NuGet.Packaging" Version="7.0.0" />
     <PackageReference Include="Nuke.Common" Version="9.0.4" />