fix workflow slack msg

[aalves08]

Summary

Fixes #

• fix workflow slack msg for https://github.com/rancher/dashboard/actions/runs/12041142481/job/33572872014

Occurred changes and/or fixed issues

Technical notes summary

Areas or cases that should be tested

Areas which could experience regressions

Screenshot/Video

Checklist

• The PR is linked to an issue and the linked issue has a Milestone, or no issue is needed
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