chore: adds missing configure await

Signed-off-by: Vincent Biret <vibiret@microsoft.com>

Author: baywet

src/HttpClientRequestAdapter.cs

@@ -444,7 +444,7 @@ private async Task ThrowIfFailedResponse(HttpResponseMessage response, Dictionar
                 return null;// ensure a useful stream is passed to the factory
 #pragma warning disable CS0618 // Type or member is obsolete
             //TODO remove with v2
-            var rootNode = pNodeFactory is IAsyncParseNodeFactory asyncParseNodeFactory ? await asyncParseNodeFactory.GetRootParseNodeAsync(responseContentType!, contentStream, cancellationToken) : pNodeFactory.GetRootParseNode(responseContentType!, contentStream);
+            var rootNode = pNodeFactory is IAsyncParseNodeFactory asyncParseNodeFactory ? await asyncParseNodeFactory.GetRootParseNodeAsync(responseContentType!, contentStream, cancellationToken).ConfigureAwait(false) : pNodeFactory.GetRootParseNode(responseContentType!, contentStream);
 #pragma warning restore CS0618 // Type or member is obsolete
             return rootNode;
         }