Bump BenchmarkDotNet from 0.15.5 to 0.15.6 (#3638)

---
updated-dependencies:
- dependency-name: BenchmarkDotNet
  dependency-version: 0.15.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Directory.Packages.props

@@ -1,7 +1,7 @@
 <Project>
   <ItemGroup>
     <PackageVersion Include="Autofac.Extensions.DependencyInjection" Version="10.0.0" />
-    <PackageVersion Include="BenchmarkDotNet" Version="0.15.5" />
+    <PackageVersion Include="BenchmarkDotNet" Version="0.15.6" />
     <PackageVersion Include="coverlet.msbuild" Version="6.0.4" />
     <PackageVersion Include="GitHubActionsTestLogger" Version="2.4.1" />
     <PackageVersion Include="IdentityServer4" Version="3.1.4" />