Bump prometheus-net.AspNetCore from 5.0.2 to 6.0.0

Bumps [prometheus-net.AspNetCore](https://github.com/prometheus-net/prometheus-net) from 5.0.2 to 6.0.0.
- [Release notes](https://github.com/prometheus-net/prometheus-net/releases)
- [Changelog](https://github.com/prometheus-net/prometheus-net/blob/master/History)
- [Commits](https://github.com/prometheus-net/prometheus-net/compare/v5.0.2...v6.0.0)

---
updated-dependencies:
- dependency-name: prometheus-net.AspNetCore
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Jellyfin.Server/Jellyfin.Server.csproj

@@ -40,7 +40,7 @@
     <PackageReference Include="Microsoft.Extensions.Diagnostics.HealthChecks" Version="6.0.2" />
     <PackageReference Include="Microsoft.Extensions.Diagnostics.HealthChecks.EntityFrameworkCore" Version="6.0.2" />
     <PackageReference Include="prometheus-net" Version="6.0.0" />
-    <PackageReference Include="prometheus-net.AspNetCore" Version="5.0.2" />
+    <PackageReference Include="prometheus-net.AspNetCore" Version="6.0.0" />
     <PackageReference Include="Serilog.AspNetCore" Version="4.1.0" />
     <PackageReference Include="Serilog.Enrichers.Thread" Version="3.1.0" />
     <PackageReference Include="Serilog.Settings.Configuration" Version="3.3.0" />