Bump Serilog from 3.1.1 to 4.2.0 in /src (#129)

Bumps [Serilog](https://github.com/serilog/serilog) from 3.1.1 to 4.2.0.
- [Release notes](https://github.com/serilog/serilog/releases)
- [Commits](serilog/serilog@v3.1.1...v4.2.0)

---
updated-dependencies:
- dependency-name: Serilog
  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>

src/Destructurama.Attributed.Tests/Destructurama.Attributed.Tests.csproj

@@ -13,7 +13,7 @@
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageReference Include="NUnit" Version="4.1.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
-    <PackageReference Include="Serilog" Version="3.1.1" />
+    <PackageReference Include="Serilog" Version="4.2.0" />
     <PackageReference Include="Shouldly" Version="4.2.1" />
     <PackageReference Include="PublicApiGenerator" Version="11.2.0" />
     <PackageReference Include="coverlet.msbuild" Version="6.0.2">

src/Destructurama.Attributed/Destructurama.Attributed.csproj

@@ -8,7 +8,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Serilog" Version="3.1.1" />
+    <PackageReference Include="Serilog" Version="4.2.0" />
     <PackageReference Include="PolySharp" Version="1.14.1" PrivateAssets="All" />
     <InternalsVisibleTo Include="Destructurama.Attributed.Tests, PublicKey=0024000004800000940000000602000000240000525341310004000001000100638a43140e8a1271c1453df1379e64b40b67a1f333864c1aef5ac318a0fa2008545c3d35a82ef005edf0de1ad1e1ea155722fe289df0e462f78c40a668cbc96d7be1d487faef5714a54bb4e57909c86b3924c2db6d55ccf59939b99eb0cab6e8a91429ba0ce630c08a319b323bddcbbd509f1afe4ae77a6cbb8b447f588febc3" />
     <InternalsVisibleTo Include="Benchmarks, PublicKey=0024000004800000940000000602000000240000525341310004000001000100638a43140e8a1271c1453df1379e64b40b67a1f333864c1aef5ac318a0fa2008545c3d35a82ef005edf0de1ad1e1ea155722fe289df0e462f78c40a668cbc96d7be1d487faef5714a54bb4e57909c86b3924c2db6d55ccf59939b99eb0cab6e8a91429ba0ce630c08a319b323bddcbbd509f1afe4ae77a6cbb8b447f588febc3" />