chore(deps): update all to v4 (major)

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	major	v3 -> v4
mikepenz/action-junit-report	action	major	v3 -> v4

---

Release Notes

actions/checkout (actions/checkout)

### [`v4`](https://togithub.com/actions/checkout/blob/HEAD/CHANGELOG.md#v400) [Compare Source](https://togithub.com/actions/checkout/compare/v3...v4) - [Support fetching without the --progress option](https://togithub.com/actions/checkout/pull/1067) - [Update to node20](https://togithub.com/actions/checkout/pull/1436)

mikepenz/action-junit-report (mikepenz/action-junit-report)

### [`v4`](https://togithub.com/mikepenz/action-junit-report/releases/tag/v4) [Compare Source](https://togithub.com/mikepenz/action-junit-report/compare/v3...v4) #### 🚀 Features - Adding time to the test log - PR: [#​950](https://togithub.com/mikepenz/action-junit-report/issues/950) #### 📦 Dependencies - Dependency upgrades - PR: [#​951](https://togithub.com/mikepenz/action-junit-report/issues/951)

---

Configuration

📅 Schedule: Branch creation - "before 3am on Monday" in timezone Europe/Berlin, 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 these updates again.

---

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

---

This PR has been generated by Mend Renovate. View repository job log here.