* Simplify Microsoft.OpenApi package references

* Update Microsoft.OpenApi.YamlReader.csproj

* Apply suggestions from code review

Signed-off-by: Vincent Biret <[email protected]>
Co-authored-by: Youssef Fahmy <[email protected]>

Signed-off-by: Vincent Biret <[email protected]>

…eys (#3044) (#3047)

- Dispose HttpResponseMessage in LoadFromUrlAsync (was leaking on every download)
- Run the assembly reads and GHES downloads concurrently in GlobalSetup via
  Task.WhenAll instead of sequential awaits; aggregate into _streams afterward
  to avoid concurrent Dictionary writes
- Replace string-keyed _streams (mixed file names / URLs) with a private
  DescriptionSource enum for compile-time-checked, pre-sized lookups
- Drop the redundant async/await wrapper on each [Benchmark] method so the
  MemoryDiagnoser numbers reflect ParseDocumentAsync, not an extra state machine
- Derive the four pinned GHES description URLs from one commit SHA constant
  instead of duplicating it across four literals
- Add an HttpClient timeout; modernize Assembly access; align field naming

Co-authored-by: Imad <[email protected]>

Co-authored-by: release-please-token-provider[bot] <225477224+release-please-token-provider[bot]@users.noreply.github.com>