test(cat-voices): add allure report to slack

[emiride]

Description

Adding a slack notification for nightly CI run.

Related Issue(s)

List the issue numbers related to this pull request.

e.g., Resolves #751

Description of Changes

Added a step in Github Action for Nightly CI to send a link and summary of tests to Slack channel.

Breaking Changes

There are no breaking changes.

Screenshots

Related Pull Requests

no related PR

e.g., #1, #1

Please confirm the following checks

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream module

[github-actions]

✅ Test Report | ${\color{lightgreen}Pass: 292/292}$ | ${\color{red}Fail: 0/292}$ |

[kukkok3]

LGTM