Describe the bug
The message posted to Slack when my workflow finishes links to a URL of the following form:

https://github.com/<owner>/<repo>/actions?query=<workflow-name>

However, it appears that Github have changed its URLs for actions such that the appropriate URL is now:

https://github.com/<owner>/<repo>/actions/workflows/<workflow-filename>.yml

To Reproduce
Steps to reproduce the behavior:

1. Run a workflow using act10ns/slack@v1.
2. Click on the link in the message posted to Slack.

Expected behavior
I expect to be taken to a page listing recent runs of the appropriate workflow. (I'd prefer to be taken to the run that triggered the message, but that's a separate feature request.)

Screenshots
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Desktop (please complete the following information):
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Smartphone (please complete the following information):
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Additional context
None.