chore(deps): update docker/build-push-action action to v7 (#230)

This PR contains the following updates:

| Package | Type | Update | Change | OpenSSF |
|---|---|---|---|---|
|
[docker/build-push-action](https://redirect.github.com/docker/build-push-action)
| action | major | `v6` → `v7` | [![OpenSSF
Scorecard](https://api.securityscorecards.dev/projects/github.com/docker/build-push-action/badge)](https://securityscorecards.dev/viewer/?uri=github.com/docker/build-push-action)
|

---

### Release Notes

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

###
[`v7`](https://redirect.github.com/docker/build-push-action/compare/v6...v7)

[Compare
Source](https://redirect.github.com/docker/build-push-action/compare/v6...v7)

</details>

---

### Configuration

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

🚦 **Automerge**: Enabled.

♻ **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.

---

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

---

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.github/workflows/qa.yml

@@ -160,7 +160,7 @@ jobs:
 
       - name: Build and push
         if: github.event_name == 'pull_request' || github.event_name == 'push'
-        uses: docker/build-push-action@10e90e3645eae34f1e60eeb005ba3a3d33f178e8 # v6
+        uses: docker/build-push-action@d08e5c354a6adb9ed34480a06d141179aa583294 # v7
         with:
           context: .
           push: true