chore(deps): update dependency prometheus-net to v8 (#9333)

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

Directory.Packages.props

@@ -55,7 +55,7 @@
     <PackageVersion Include="PlaylistsNET" Version="1.3.1" />
     <PackageVersion Include="prometheus-net.AspNetCore" Version="7.0.0" />
     <PackageVersion Include="prometheus-net.DotNetRuntime" Version="4.4.0" />
-    <PackageVersion Include="prometheus-net" Version="7.0.0" />
+    <PackageVersion Include="prometheus-net" Version="8.0.0" />
     <PackageVersion Include="Serilog.AspNetCore" Version="6.1.0" />
     <PackageVersion Include="Serilog.Enrichers.Thread" Version="3.1.0" />
     <PackageVersion Include="Serilog.Settings.Configuration" Version="3.4.0" />