Add Delete Attachment to API

[alejandrosaenz117]

Greetings,

Currently, I do not see an API for deleting attachments from a JIRA issue. This is a feature request to implement this.

https://developer.atlassian.com/cloud/jira/platform/rest/v3/api-group-issue-attachments/#api-rest-api-3-attachment-id-delete

[asharpe]

This is in the latest release (8.2.1), but it looks like npm hasn't been updated since 6.4.0

Edit: remove claim about npm being updated