Migrate to C#12

Util/FFmpeg/VideoEncoder.cs

@@ -107,14 +107,13 @@ internal sealed class VideoEncoder : IEquatable<VideoEncoder>
     /// (for the families the codec has); GPUUtil.GetPrioritizedEncoders keeps this order for the encoders that do not
     /// belong to the active GPU vendor.
     /// </summary>
-    public static readonly IReadOnlyList<VideoEncoder> All = new[]
-    {
+    public static readonly IReadOnlyList<VideoEncoder> All = [
         H264_NVENC, H264_QSV, H264_AMF, H264_VideoToolbox, Libx264,
         HEVC_NVENC, HEVC_QSV, HEVC_AMF, HEVC_VideoToolbox, Libx265,
         VP9_NVENC, VP9_QSV, LibvpxVP9,
         AV1_NVENC, AV1_QSV, AV1_AMF, LibSvtAv1, LibAomAv1,
         LibVvenc
-    };
+    ];
 
     /// <summary>Lookup table of <see cref="All"/> by <see cref="Name"/> (case-insensitive), used by <see cref="FromName"/>.</summary>
     private static readonly Dictionary<string, VideoEncoder> ByName =