Update dependency Serilog.Extensions.Logging to v9

Author: renovate[bot]

DisCatSharp.TemplateBot.csproj

@@ -11,7 +11,7 @@
     <PackageReference Include="DisCatSharp.Interactivity" Version="10.6.4" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="Serilog" Version="4.2.0" />
-    <PackageReference Include="Serilog.Extensions.Logging" Version="8.0.0" />
+    <PackageReference Include="Serilog.Extensions.Logging" Version="9.0.0" />
     <PackageReference Include="Serilog.Sinks.Console" Version="6.0.0" />
   </ItemGroup>