Add Open Telemetry Dotnet monorepo (#9710)

lib/config/presets/internal/monorepo.ts

@@ -119,6 +119,7 @@ const repoGroups = {
   nuxtjs: 'https://github.com/nuxt/nuxt.js',
   openfeign: 'https://github.com/OpenFeign/feign',
   opentelemetry: 'https://github.com/open-telemetry/opentelemetry-js',
+  OpenTelemetryDotnet: 'https://github.com/open-telemetry/opentelemetry-dotnet',
   picasso: 'https://github.com/qlik-oss/picasso.js',
   pnpjs: 'https://github.com/pnp/pnpjs',
   playwright: 'https://github.com/Microsoft/playwright',