build(deps): bump Microsoft.CodeAnalysis.NetAnalyzers in /src (#537)

Bumps [Microsoft.CodeAnalysis.NetAnalyzers](https://github.com/dotnet/roslyn-analyzers) from 5.0.3 to 6.0.0.
- [Release notes](https://github.com/dotnet/roslyn-analyzers/releases)
- [Changelog](https://github.com/dotnet/roslyn-analyzers/blob/main/PostReleaseActivities.md)
- [Commits](https://github.com/dotnet/roslyn-analyzers/commits)

---
updated-dependencies:
- dependency-name: Microsoft.CodeAnalysis.NetAnalyzers
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

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

Author: dependabot[bot]

src/Directory.build.props

@@ -44,7 +44,7 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="stylecop.analyzers" Version="1.2.0-beta.321" PrivateAssets="all" />
-    <PackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="5.0.3" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="6.0.0" PrivateAssets="all" />
     <PackageReference Include="Roslynator.Analyzers" Version="3.2.2" PrivateAssets="All" />
   </ItemGroup>