This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [docker/build-push-action](https://github.com/docker/build-push-action) | action | major | `v6.19.2` → `v7.0.0` |

---

### Release Notes

<details>
<summary>docker/build-push-action (docker/build-push-action)</summary>

### [`v7.0.0`](https://github.com/docker/build-push-action/releases/tag/v7.0.0)

[Compare Source](docker/build-push-action@v6.19.2...v7.0.0)

- Node 24 as default runtime (requires [Actions Runner v2.327.1](https://github.com/actions/runner/releases/tag/v2.327.1) or later) by [@&#8203;crazy-max](https://github.com/crazy-max) in [#&#8203;1470](docker/build-push-action#1470)
- Remove deprecated `DOCKER_BUILD_NO_SUMMARY` and `DOCKER_BUILD_EXPORT_RETENTION_DAYS` envs by [@&#8203;crazy-max](https://github.com/crazy-max) in [#&#8203;1473](docker/build-push-action#1473)
- Remove legacy export-build tool support for build summary by [@&#8203;crazy-max](https://github.com/crazy-max) in [#&#8203;1474](docker/build-push-action#1474)
- Switch to ESM and update config/test wiring by [@&#8203;crazy-max](https://github.com/crazy-max) in [#&#8203;1466](docker/build-push-action#1466)
- Bump [@&#8203;actions/core](https://github.com/actions/core) from 1.11.1 to 3.0.0 in [#&#8203;1454](docker/build-push-action#1454)
- Bump [@&#8203;docker/actions-toolkit](https://github.com/docker/actions-toolkit) from 0.62.1 to 0.79.0 in [#&#8203;1453](docker/build-push-action#1453) [#&#8203;1472](docker/build-push-action#1472) [#&#8203;1479](docker/build-push-action#1479)
- Bump minimatch from 3.1.2 to 3.1.5 in [#&#8203;1463](docker/build-push-action#1463)

**Full Changelog**: <docker/build-push-action@v6.19.2...v7.0.0>

</details>

---

### 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 is behind base branch, or you tick the rebase/retry checkbox.

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

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box

---

This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0My40Ni42IiwidXBkYXRlZEluVmVyIjoiNDMuNDYuNiIsInRhcmdldEJyYW5jaCI6ImRldmVsb3AiLCJsYWJlbHMiOltdfQ==-->

Reviewed-on: https://codeberg.org/umati/Sample-Server/pulls/1660
Co-authored-by: umati-bot <git-bot@umati.org>
Co-committed-by: umati-bot <git-bot@umati.org>