chore(deps): Bump Serilog from 3.1.1 to 4.0.0 (#1822)

Bumps [Serilog](https://github.com/serilog/serilog) from 3.1.1 to 4.0.0.
- [Release notes](https://github.com/serilog/serilog/releases)
- [Commits](https://github.com/serilog/serilog/compare/v3.1.1...v4.0.0)

---
updated-dependencies:
- dependency-name: Serilog
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Directory.Build.props

@@ -62,7 +62,7 @@
         <AnalysisLevel>latest</AnalysisLevel>
     </PropertyGroup>
     <ItemGroup>
-        <PackageReference Include="Serilog" Version="3.1.1" />
+        <PackageReference Include="Serilog" Version="4.0.0" />
         <PackageReference Include="Serilog.Sinks.Async" Version="1.5.0" />
         <PackageReference Include="Serilog.Sinks.Console" Version="5.0.1" />
         <PackageReference Include="Nerdbank.GitVersioning" Condition="!Exists('packages.config')">