change: .greet / .bye will get properly disabled if the bot can't write to the specified channel

CHANGELOG.md

@@ -2,6 +2,12 @@
 
 Mostly based on [keepachangelog](https://keepachangelog.com/en/1.0.0/) except date format. a-c-f-r-o
 
+## [5.0.6]
+
+### Changed 
+
+- `.greet` and `.bye` will now be automatically disabled if the bot losses permissions to post in the specified channel
+
 ## [5.0.5] - 11.05.2024
 
 ### Fixed

src/NadekoBot/Modules/Administration/GreetBye/GreetService.cs

@@ -222,6 +222,7 @@ public class GreetService : INService, IReadyExecutor
                 toDelete.DeleteAfter(conf.AutoDeleteByeMessagesTimer);
         }
         catch (HttpException ex) when (ex.DiscordCode == DiscordErrorCode.InsufficientPermissions
+                                       || ex.DiscordCode == DiscordErrorCode.MissingPermissions
                                        || ex.DiscordCode == DiscordErrorCode.UnknownChannel)
         {
             Log.Warning(ex,
@@ -263,6 +264,7 @@ public class GreetService : INService, IReadyExecutor
                 toDelete.DeleteAfter(conf.AutoDeleteGreetMessagesTimer);
         }
         catch (HttpException ex) when (ex.DiscordCode == DiscordErrorCode.InsufficientPermissions
+                                       || ex.DiscordCode == DiscordErrorCode.MissingPermissions
                                        || ex.DiscordCode == DiscordErrorCode.UnknownChannel)
         {
             Log.Warning(ex,