runner/github: increase self-hosted timeout to 35days

[casperdcl]

https://docs.github.com/en/actions/hosting-your-own-runners/about-self-hosted-runners#usage-limits now shows 35d (not 72h).

• increase timeout fix: Increase GHA workflow timeout to 35 days from 72h #1067
• test?
• update docs docs: Update GHA workflow timeout to 35 days cml.dev#262

(original thread #1054 (comment))

[danieljimeneznz]

I have opened a PR for this change (referenced above) - I also question whether or not the change is actually necessary based on the Github documentation - https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idtimeout-minutes

I guess it is a good backup to ensure the runner is always shutdown after a predetermined amount of time, maybe we do 35 days + 5 minutes instead?