ci(action): update actions/add-to-project action to v0.6.0

This PR contains the following updates:

Package	Type	Update	Change
actions/add-to-project	action	minor	`v0.5.0` -> `v0.6.0`

Release Notes

actions/add-to-project (actions/add-to-project)

### [`v0.6.0`](https://togithub.com/actions/add-to-project/compare/v0.5.0...v0.6.0) [Compare Source](https://togithub.com/actions/add-to-project/compare/v0.5.0...v0.6.0)

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

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

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

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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

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octokit / request-action

ci(action): update actions/add-to-project action to v0.6.0 #296

Release Notes

Configuration