Bump BuildBundlerMinifier from 2.8.391 to 2.9.406 (#269)

Bumps [BuildBundlerMinifier](https://github.com/madskristensen/BundlerMinifier) from 2.8.391 to 2.9.406.
- [Release notes](https://github.com/madskristensen/BundlerMinifier/releases)
- [Changelog](https://github.com/madskristensen/BundlerMinifier/blob/master/CHANGELOG.md)
- [Commits](https://github.com/madskristensen/BundlerMinifier/commits)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot-preview[bot]

Fritz.StreamTools/Fritz.StreamTools.csproj

@@ -18,7 +18,7 @@
 	  <Content Remove="wwwroot\hey_listen.wav" />
 	</ItemGroup>
 	<ItemGroup>
-		<PackageReference Include="BuildBundlerMinifier" Version="2.8.391" />
+		<PackageReference Include="BuildBundlerMinifier" Version="2.9.406" />
 		<PackageReference Include="Bundgaard.MixerLib" Version="1.2.65" />
 		<PackageReference Include="LazyCache.AspNetCore" Version="2.0.0-beta03" />
 		<PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.7.0" />