Description

Adds a GitHub Action to automatically mark stale PRs and close them after inactivity, adapted from the opentelemetry-java workflow.

• PRs with no activity for 14 days are marked stale by
  • by adding a stale comment from configuration
  • adding the "Stale" label
• Stale PRs with no activity for a further 14 days are closed and add the close comment
• PRs with an exempt label are ignored
• Added section to CONTRIBUTING.md
• Issues are not affected

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

CI-only change, no code tests applicable.

Does This PR Require a Contrib Repo Change?

• Yes. - Link to PR:
• No.

Checklist:

• Followed the style guidelines of this project
• Changelogs have been updated
• Unit tests have been added
• Documentation has been updated

Thank you @MikeGoldsmith for making this happen!

Please could you also whip up a quick, generalized explanation under CONTRIBUTING Pull Requests.

I think the 14+7 day rule is generally fair. But maybe a 14+14 would be safer?

EDIT: Shoot I'm on the wrong PR 😉 will go to the other one open-telemetry/opentelemetry-python-contrib#4220

I do want to add the GHA to both core and contrib, but happy to tweak there first then copy here.

I've updated this PR to match the one we have open for contrib:

• increase stale / close days to 14+14
• add exempt PR labels
• add stale PRs section to CONTRIBUTING.md

Co-authored-by: Emídio Neto <9735060+emdneto@users.noreply.github.com>

… into mike/add-stale-gha

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Please could someone add this to the PR review board

Done!