Bump BenchmarkDotNet from 0.15.2 to 0.15.4

---
updated-dependencies:
- dependency-name: BenchmarkDotNet
  dependency-version: 0.15.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: BenchmarkDotNet
  dependency-version: 0.15.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

test/Hyperbee.Json.Benchmark/Hyperbee.Json.Benchmark.csproj

@@ -14,7 +14,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="BenchmarkDotNet" Version="0.15.2" />
+    <PackageReference Include="BenchmarkDotNet" Version="0.15.4" />
     <PackageReference Include="JsonCons.JsonPath" Version="1.1.0" />
     <PackageReference Include="JsonCraft.JsonPath" Version="1.0.0" />
     <PackageReference Include="JsonPatch.Net" Version="3.3.0" />

test/Hyperbee.Json.Tests/Hyperbee.Json.Tests.csproj

@@ -8,7 +8,7 @@
     <EmbeddedResource Include="TestSupport\Json\BookStore.json" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="BenchmarkDotNet" Version="0.15.2" />
+    <PackageReference Include="BenchmarkDotNet" Version="0.15.4" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
     <PackageReference Include="MSTest.TestFramework" Version="3.10.1" />
     <PackageReference Include="MSTest.TestFramework" Version="3.9.3" />