message: Update draft version to reflect reality.
  Summary: We are currently actually on -20, let's actually keep this updated from now on.
diff: @@ -173,7 +173,7 @@ enum class QuicNodeType : bool {
  enum class QuicVersion : uint32_t {
  VERSION_NEGOTIATION = 0x00000000,
  MVFST = 0xfaceb000,
  - QUIC_DRAFT = 0xFF000011, // Draft-17
  + QUIC_DRAFT = 0xFF000014, // Draft-20
  MVFST_INVALID = 0xfaceb00f,
  };
  