Voice server update endpoint is nullable

discord/discord-api-docs#1741

Author: BartArys

common/src/main/kotlin/com/gitlab/kordlib/common/entity/DiscordGuild.kt

@@ -304,12 +304,20 @@ data class DiscordIntegrationAccount(
 )
 
 
+/**
+ * @param token The voice connection token.
+ * @param guildId The guild id this server update is for.
+ * @param endpoint The voice server host.
+ * A null endpoint means that the voice server allocated has gone away and is trying to be reallocated.
+ * You should attempt to disconnect from the currently connected voice server,
+ * and not attempt to reconnect until a new voice server is allocated.
+ */
 @Serializable
 data class DiscordVoiceServerUpdateData(
         val token: String,
         @SerialName("guild_id")
         val guildId: Snowflake,
-        val endpoint: String,
+        val endpoint: String?,
 )
 
 @Serializable

core/src/main/kotlin/com/gitlab/kordlib/core/event/guild/VoiceServerUpdateEvent.kt

@@ -12,7 +12,7 @@ import com.gitlab.kordlib.core.supplier.EntitySupplyStrategy
 class VoiceServerUpdateEvent(
         val token: String,
         val guildId: Snowflake,
-        val endpoint: String,
+        val endpoint: String?,
         override val kord: Kord,
         override val shard: Int,
         override val supplier: EntitySupplier = kord.defaultSupplier