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
...

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

Author: dependabot[bot]

test/Hyperbee.Templating.Benchmark/Hyperbee.Templating.Benchmark.csproj

@@ -10,7 +10,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="BenchmarkDotNet" Version="0.15.2" />
+    <PackageReference Include="BenchmarkDotNet" Version="0.15.4" />
     <PackageReference Include="Hyperbee.XS" Version="1.3.3" />
   </ItemGroup>