chore(operator): fix operator-publish-operator-hub.yml workflow

[JoaoBraveCoding]

What this PR does / why we need it:

Change was introduced in #14328 but it's broken as seen by https://github.com/grafana/loki/actions/runs/11667312469/job/32484318863#step:2:7

Which issue(s) this PR fixes:
Fixes #

Special notes for your reviewer:

Checklist

• Reviewed the CONTRIBUTING.md guide (required)
• Documentation added
• Tests updated
• Title matches the required conventional commits format, see here
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