Do not attempt to parse response bodies on HTTP 204

src/TypedRest/Endpoints/Generic/ElementEndpoint.cs

@@ -129,6 +129,8 @@ public virtual async Task DeleteAsync(CancellationToken cancellationToken = defa
 
     private async Task<TEntity?> TryReadAsAsync(HttpResponseMessage response, CancellationToken cancellationToken)
     {
+        if (response.StatusCode == HttpStatusCode.NoContent) return null;
+
         try
         {
             return await response.Content.ReadAsAsync<TEntity?>(Serializers, cancellationToken).NoContext();

src/TypedRest/Http/ResponseCache.cs

@@ -16,7 +16,7 @@ public sealed class ResponseCache
     /// </summary>
     /// <returns>The <see cref="ResponseCache"/>; <c>null</c> if the response is not eligible for caching.</returns>
     public static ResponseCache? From(HttpResponseMessage response)
-        => response is {IsSuccessStatusCode: true, Headers.CacheControl: null or {NoStore: false}}
+        => response is {IsSuccessStatusCode: true, StatusCode: not HttpStatusCode.NoContent, Headers.CacheControl: null or {NoStore: false}}
             ? new(response)
             : null;