`UnfurlRequest` for `Chat.Unfurl` has incorrect input type for value of unfurls dictionary

[zzullick]

Hello again! I believe the type for the payload of the chat.unfurl method is incorrect. It specifies the unfurls array as a Dictionary<string,IMessageBlock[]> when it should be a Dictionary<string,MessageAttachment>. When using the type as-is it is rejected by Slack with an error invalid_unfurls_format.

Type in question

• https://github.com/stoiveyp/Slack.NetStandard/blob/main/Slack.NetStandard/WebApi/Chat/UnfurlRequest.cs#L18

Useful links to same object in Slack's typescript WebAPI SDK

• https://github.com/slackapi/node-slack-sdk/blob/572b841606fa6bab5d5de81306cf5e66a3dae8aa/packages/web-api/src/methods.ts#L1447
• https://github.com/slackapi/node-slack-sdk/blob/572b841606fa6bab5d5de81306cf5e66a3dae8aa/packages/types/src/index.ts#L427

[stoiveyp]

Request signature has been updated in 3.13.0 and 3.14.0-beta1 👍