⬆️ Update ghcr.io/hassio-addons/base Docker tag to v15.0.4

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
ghcr.io/hassio-addons/base (source)		patch	15.0.3 -> 15.0.4
ghcr.io/hassio-addons/base (source)	final	patch	15.0.3 -> 15.0.4

---

Release Notes

hassio-addons/addon-base (ghcr.io/hassio-addons/base)

### [`v15.0.4`](https://togithub.com/hassio-addons/addon-base/releases/tag/v15.0.4) [Compare Source](https://togithub.com/hassio-addons/addon-base/compare/v15.0.3...v15.0.4) ##### What’s changed ##### 🧰 Maintenance - :fireworks: Updates maintenance/license year to 2024 [@​frenck](https://togithub.com/frenck) ([#​277](https://togithub.com/hassio-addons/addon-base/pull/277)) ##### ⬆️ Dependency updates - ⬆️ Update OpenSSL to v3.1.4-r3 [@​renovate](https://togithub.com/renovate) ([#​278](https://togithub.com/hassio-addons/addon-base/pull/278))

---

Configuration

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

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, 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.