Update dependency xunit.v3.extensibility.core to 2.0.3 (#122)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

src/Serilog.Sinks.XUnit.Injectable/Serilog.Sinks.XUnit.Injectable.csproj

@@ -37,6 +37,6 @@
         <None Include="..\..\LICENSE" Pack="true" PackagePath="\" />
 
         <PackageReference Include="Serilog" Version="4.3.0" />
-        <PackageReference Include="xunit.v3.extensibility.core" Version="2.0.2" />
+        <PackageReference Include="xunit.v3.extensibility.core" Version="2.0.3" />
     </ItemGroup>
 </Project>