Add timeouts to all GitHub jobs

[mathbunnyru]

Describe your changes

Issue ticket if applicable

Checklist (especially for first-time contributors)

• I have performed a self-review of my code
• If it is a core feature, I have added thorough tests
• I will try not to use force-push to make the review process easier for reviewers
• I have updated the documentation for significant changes

[mathbunnyru]

I recently had a timeout issue in my fork: https://github.com/mathbunnyru/docker-stacks/actions/runs/13424787928/job/37505995405

And we actually hit 6h timeout many times when building aarch64 images on self-hosted runners.

So, let's add GitHub timeouts, to fail fast.
These are not super strict and I would rather give a few extra minutes for a job to finish than get a build failure.
And we might want to increase some of these in the future.

[mathbunnyru]

This could probably be better set as a param for each image, but for now let's keep one common timeout (the same goes for docker-tag-push.yml)