build(deps): update dependency swashbuckle.aspnetcore to v8

Author: renovate[bot]

Directory.Packages.props

@@ -15,7 +15,7 @@
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
     <PackageVersion Include="Nerdbank.GitVersioning" Version="3.7.115" />
     <PackageVersion Include="NSubstitute" Version="5.3.0" />
-    <PackageVersion Include="Swashbuckle.AspNetCore" Version="7.3.2" />
+    <PackageVersion Include="Swashbuckle.AspNetCore" Version="8.1.3" />
     <PackageVersion Include="xunit" Version="2.9.3" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="3.0.2" />
   </ItemGroup>