build(deps): update redhat-actions/push-to-registry action to v2.8

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
redhat-actions/push-to-registry	action	minor	v2.7 -> v2.8

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Release Notes

redhat-actions/push-to-registry (redhat-actions/push-to-registry)

### [`v2.8`](https://togithub.com/redhat-actions/push-to-registry/blob/HEAD/CHANGELOG.md#v28) [Compare Source](https://togithub.com/redhat-actions/push-to-registry/compare/v2.7...v2.8) - Update action to run on Node20. https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/

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Configuration

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🔕 Ignore: Close this PR and you won't be reminded about this update again.

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• [ ] If you want to rebase/retry this PR, check this box

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