fix(deps): update rust crate serenity to v0.12.4

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
serenity	dependencies	patch	0.12.2 -> 0.12.4

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Release Notes

serenity-rs/serenity (serenity)

v0.12.4

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This is a hotfix release to fix broken behaviour of Message::author_permissions before it is relied on.

Thanks to the following for their contributions:

• [@​GnomedDev]
• [@​jamesbt365]

Deprecations

• #​3037 Permission methods which do not respect channel permission overrides are now deprecated, use the _in variants.

Additions

• #​3008 From<&User> has been added to CreateEmbedAuthor, to avoid consuming the user.

Fixes

• #​3037 Message::author_permissions now respects permission overrides, as it is documented to.
• #​3039 Message::author_permissions now respects SEND_MESSAGES_IN_THREADS when used in threads.

Documentation improvements

• #​3038 Documentation for Guild::threads has been expanded.

v0.12.3

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Thanks to the following for their contributions:

• [@​FabseGP]
• [@​GnomedDev]
• [@​HiccupEnthusiast]
• [@​MarkusTheOrt]
• [@​NiiightmareXD]
• [@​ValgulNecron]
• [@​gBasil]
• [@​ivinjabraham]
• [@​jamesbt365]
• [@​limonfort]
• [@​m1sk9]
• [@​mkrasnitski]
• [@​onzecki]
• [@​rhgndf]
• [@​stormofice]
• [@​thmasq]
• [@​thou-vow]

Deprecations

• #​2894 Message(Id)::link_ensured can be replaced by Message(Id)::link if recieved via event, or MessageId::link if the message was recieved via a HTTP request.
• #​2905 CreateInteractionResponse::PremiumRequired has been deprecated and replaced with Premium Buttons.
• #​3030 GuildChannel::permissions_for_user has been deprecated, use the new Message::author_permissions helper or Guild::user_permissions_in.

Additions

• #​2891 Guild Incident message types have been added to MessageType.
• #​2913 CreateButton now implements From<Button>.
• #​2914 User::display_name has been added, as users may have two different names now.
• #​2920 Support for Application Emojis has been added, getting rid of those "emoji servers" many bots required.
• #​2905 Support for Premium Buttons has been added, which link to the store page of a chosen SKU.
• #​2926 A method to get the role icon URL has been added.
• #​2939 Some missing fields have been added to to CurrentApplicationInfo.
• #​2946 Support for the Get Guild Role endpoint has been added.
• #​2960 Support for the Get Sticker Pack by Id endpoint has been added.
• #​2962 Some missing entries in GuildMemberFlags have been added.
• #​2950 The missing USE_EXTERNAL_APPS permission has been added.
• #​2987 A builder for the Get Entitlements endpoint has been added.
• #​2996 MessageReferenceKind has been added to start supporting forwarding.
• #​3001 {PartialGuild, Guild}::partial_member_permissions has been added for more efficent permissions checking
• #​3013 Interaction responses can now send polls.
• #​3018 User App support has been stablised, usable without unstable_discord_api.
• #​3021 Support for Entry Point Commands has been added.
• #​3030 A Message::author_permissions helper has been added, alongside Permissions::dm_permissions.

Deserialisation Fixes

• #​2887, #​2893
  Messages with reactions no longer fail to deserialize due to super reaction changes.
• #​2917 Application no longer fails to deserialize with unstable_discord_api
• #​3032 Guilds with an @​everyone role at position -1 no longer fail to deserialise.

General fixes

• #​2886 A typo has been fixed in GuildId::members_iter documentation.
• #​2906 CreateAttachment documentation has been updated to be more consistent with other builders.
• #​2911 CreateEmbedAuthor documentation can now spell embed correctly.
• Pushed to Current AuthorizingIntegrationOwners is now usable, as the field was previously private.
• #​2945 (Partial)Guild::member_permissions is now usable without cache.
• #​2973 ChannelId::delete_messages documentation has been expanded to document the single item case.
• #​2959 The rules for attachment names for local attachments in embeds have now been documented.
• #​3005 The fields of BulkBanResponse have been made public.
• #​3006 The bulk_ban endpoint is now usable, previously unusable due to Send issues.

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