Double dashes inside code blocks in Jira comments are converted to tilde in Slack notifications

Issue Summary

Having two double dashes inside a code block in a Jira comment (-- foo --) will cause two of those dashes to be converted to ~, because being enclosed by double-dashes in Jira and tildes in Slack mean strikethrough formatting. However, since it's inside a code block, it should not trigger such formatting.

Steps to Reproduce

1. Add a link or a comment in Jira using "-".
2. When viewing the same link or comment in Slack dashes will be converted to "~".

Expected Results

The format of the dashes should not change to another character.

Actual Results

Dashes "-" are converted to "~"

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available