Bump Microsoft.Web.LibraryManager.Build from 2.1.175 to 3.0.71 (#1641)

---
updated-dependencies:
- dependency-name: Microsoft.Web.LibraryManager.Build
  dependency-version: 3.0.71
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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generators/dotnetcore/templates/dotnetcore/src/Directory.Packages.props

@@ -19,7 +19,7 @@
   	<PackageVersion Include="Microsoft.AspNetCore.Components.Authorization" Version="$(AspNetCorePackageVersion)" />
   	<PackageVersion Include="Microsoft.AspNetCore.Components.WebAssembly" Version="$(AspNetCorePackageVersion)" />
   	<PackageVersion Include="Microsoft.AspNetCore.Components.WebAssembly.DevServer" Version="$(AspNetCorePackageVersion)" />
-  	<PackageVersion Include="Microsoft.Web.LibraryManager.Build" Version="2.1.175" />
+  	<PackageVersion Include="Microsoft.Web.LibraryManager.Build" Version="3.0.71" />
 	<PackageVersion Include="MimeKit" Version="4.11.0" />
   	<PackageVersion Include="System.Net.Http.Json" Version="$(AspNetCorePackageVersion)" />
   	<PackageVersion Include="Toolbelt.Blazor.HttpClientInterceptor" Version="10.2.0" />