ci(deps): update docker/build-push-action action to v6.8.0 (#109)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[docker/build-push-action](https://github.com/docker/build-push-action)
| action | minor | `v6.7.0` -> `v6.8.0` |

---

### Release Notes

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

###
[`v6.8.0`](https://github.com/docker/build-push-action/releases/tag/v6.8.0)

[Compare
Source](https://github.com/docker/build-push-action/compare/v6.7.0...v6.8.0)

- Bump
[@&#8203;docker/actions-toolkit](https://github.com/docker/actions-toolkit)
from 0.37.1 to 0.38.0 in
[https://github.com/docker/build-push-action/pull/1230](https://github.com/docker/build-push-action/pull/1230)

**Full Changelog**:
docker/build-push-action@v6.7.0...v6.8.0

</details>

---

### 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 this update
again.

---

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

---

This PR was generated by [Mend Renovate](https://mend.io/renovate/).
View the [repository job
log](https://developer.mend.io/github/Hapag-Lloyd/Workflow-Templates).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzOC45Ny4wIiwidXBkYXRlZEluVmVyIjoiMzguOTcuMCIsInRhcmdldEJyYW5jaCI6Im1haW4iLCJsYWJlbHMiOlsiZGVwZW5kZW5jeSJdfQ==-->

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

.github/workflows/docker_dockerhub_release_callable.yml

@@ -60,7 +60,7 @@ jobs:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
       - name: Build Image
-        uses: docker/build-push-action@5cd11c3a4ced054e52742c5fd54dca954e0edd85 # v6.7.0
+        uses: docker/build-push-action@32945a339266b759abcbdc89316275140b0fc960 # v6.8.0
         with:
           context: .
           load: true
@@ -79,7 +79,7 @@ jobs:
         with:
           sarif_file: "trivy-results.sarif"
       - name: Build and push image
-        uses: docker/build-push-action@5cd11c3a4ced054e52742c5fd54dca954e0edd85 # v6.7.0
+        uses: docker/build-push-action@32945a339266b759abcbdc89316275140b0fc960 # v6.8.0
         with:
           context: .
           push: ${{ inputs.push }}