Bump the serilog-testing group with 1 update (#1282)

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

Author: dependabot[bot]

Directory.Packages.props

@@ -87,7 +87,7 @@
     <PackageVersion Include="Serilog.Sinks.Console" Version="6.1.1" />
     <PackageVersion Include="Serilog.Sinks.Debug" Version="3.0.0" />
     <PackageVersion Include="Serilog.Sinks.File" Version="7.0.0" />
-    <PackageVersion Include="Serilog" Version="4.3.0" />
+    <PackageVersion Include="Serilog" Version="4.3.1" />
     <PackageVersion Include="System.Linq.AsyncEnumerable" Version="$(System10Version)" />
     <PackageVersion Include="xunit.v3" Version="3.2.2" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.5" />