fix(packages/scripts): update to adjust new oras version

[wuhuizuo]

From oras v1.2.0, there's a break change for cli option of sub command discover. Ref: https://github.com/oras-project/oras/releases/tag/v1.2.0

[ti-chi-bot]

I have already done a preliminary review for you, and I hope to help you do a better job.

Based on the title and description of the pull request, it seems that the changes are related to updating the oras version to v1.2.0 and adjusting the discover sub-command option accordingly. The diff shows that the change is made in two files where --format option is added to the oras discover command.

There are no potential problems identified in this pull request. However, it is always a good practice to ensure that the new version of oras does not introduce any new bugs or changes that might affect the existing functionality. It would be helpful to test the changes thoroughly before merging the pull request.

As for fixing suggestions, it would be good to add a test case to ensure that the new version of oras works as expected. Additionally, it would be helpful to update the documentation or README file to reflect the new version and any changes made to the code.

[wuhuizuo]

/approve

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: wuhuizuo

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