chore(deps): update actions/stale action to v6

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
actions/stale	action	major	v4 -> v6

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Release Notes

actions/stale

### [`v6`](https://togithub.com/actions/stale/compare/v5...v6) [Compare Source](https://togithub.com/actions/stale/compare/v5...v6) ### [`v5`](https://togithub.com/actions/stale/compare/v4...v5) [Compare Source](https://togithub.com/actions/stale/compare/v4...v5)

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Configuration

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🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

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• [ ] If you want to rebase/retry this PR, check this box

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Name	Status	Preview	Updated
gatsby	❌ Failed (Inspect)		Sep 25, 2022 at 5:29PM (UTC)

[github-actions[bot]]

Stale pull request message