Increase timeout for signing manifest

[see-quick]

Type of change

Select the type of your PR

• Bugfix
• Enhancement / new feature

Description

This PR increases the default timeout for the cosign CLI from 3 to 6 minutes. We’ve observed frequent signing failures in main branch builds, likely due to timeouts. Extending the timeout is a first step to mitigate these issues and assess whether it improves reliability.

Checklist

• Make sure all tests pass

[ppatierno]

So of course we don't know if it fixes the issue because we are not going through the push containers stage. @see-quick should we try to merge this one as simpler solution and see if it works? if not coming back to the #11339? Wdyt?

[see-quick]

So of course we don't know if it fixes the issue because we are not going through the push containers stage. @see-quick should we try to merge this one as simpler solution and see if it works? if not coming back to the #11339? Wdyt?

Yes, that’s how I envision it as well. I’ll keep an eye on the changes once this PR is merged. I plan to merge it on Monday—I’d rather not risk something breaking and creating work for myself this evening 😄.