chore(gha): Set default timeouts.

[curiositycasualty]

Summary

These changes set a default-timeout for all the workflows present at time of writing. To compliment these changes, I have also set an override of the org-wide var.GHA_DEFAULT_TIMEOUT (10 minutes at the org level) to 30 minutes for both the CE and EE repos.

This PR replaces https://github.com/Kong/kong/pull/12566 which was aggregating auto-generated commits, some of which introduced syntactical issues and caused the workflows to be invalid/broken. To the best of my ability, these changes do not do that and represent valid workflows.

Checklist

• [na] The Pull Request has tests
• [na] A changelog file has been created under changelog/unreleased/kong or skip-changelog label added on PR if changelog is unnecessary. README.md
• [na] There is a user-facing docs PR against https://github.com/Kong/docs.konghq.com - PUT DOCS PR HERE