Update github-actions (major)

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
cbrgm/mastodon-github-action	action	major	v1 -> v2
peter-evans/create-pull-request	action	major	v5 -> v6

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Release Notes

cbrgm/mastodon-github-action (cbrgm/mastodon-github-action)

### [`v2`](https://togithub.com/cbrgm/mastodon-github-action/compare/v1...v2) [Compare Source](https://togithub.com/cbrgm/mastodon-github-action/compare/v1...v2)

peter-evans/create-pull-request (peter-evans/create-pull-request)

### [`v6`](https://togithub.com/peter-evans/create-pull-request/compare/v5...v6) [Compare Source](https://togithub.com/peter-evans/create-pull-request/compare/v5...v6)

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Configuration

📅 Schedule: Branch creation - "before 4am on Monday" (UTC), 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.

👻 Immortal: This PR will be recreated if closed unmerged. Get config help if that's undesired.

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

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