chore(deps): bump docker/setup-buildx-action from v3.11.1 to v3.12.0 (#156)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[docker/setup-buildx-action](https://redirect.github.com/docker/setup-buildx-action)
| action | minor | `v3.11.1` → `v3.12.0` |

---
> [!WARNING]
> #### Deprecated preset: `Kong/public-shared-renovate:backend`
>
> Your config references a deprecated preset. To prevent disruption,
this file now builds on the org default (`Kong/public-shared-renovate`)
and layers a few backend-specific tweaks so behavior stays close to the
historical backend configuration.
>
> #### What's different from the default
>
> - Early Monday schedule windows (`schedule:earlyMondays`)
> - Automerge disabled for all updates (`:automergeDisabled`)
> - Renovate rate limiting disabled (`:disableRateLimiting`)
> - Standardized commit messages (semantic type `chore` and clear bump
from → to subjects)
>
> #### Recommended migration
>
> Prefer switching to the default preset and applying only the bits you
still need locally. Example configuration to replicate this preset's
behavior on top of the default:
>
> ```json
> {
>   "extends": [
>     "Kong/public-shared-renovate",
>     "schedule:earlyMondays",
>     ":automergeDisabled",
>     ":disableRateLimiting",
>     ":semanticCommitTypeAll(chore)"
>   ],
>   "packageRules": [
>     {
>       "matchPackageNames": ["*"],
>       "commitMessageAction": "bump",
>       "commitMessageLowerCase": "never",
>       "commitMessageTopic": "docker/setup-buildx-action",
>       "commitMessageExtra": "from v3.11.1 to v3.12.0"
>     }
>   ]
> }
> ```
>
> #### Timeline
>
> This compatibility alias will be removed in **January 2026**. Please
migrate to the default preset with local overrides before then.

---
> [!WARNING]
> #### Deprecated preset:
`Kong/public-shared-renovate:security-extended`
>
> Your config references a deprecated preset. To prevent disruption,
this file temporarily acts as a compatibility alias.
>
> It has been replaced by composing the base security preset with
security overrides for labels and reviewers.
>
> #### Action required
>
> Update your Renovate config to extend directly from
`Kong/public-shared-renovate//security/base` and the overrides for
labels and reviewers.
>
> #### Examples
>
> Before:
>
> ```json
> { "extends":
["Kong/public-shared-renovate:security-extended(security,team:security-managers)"]
}
> ```
>
> After:
>
> ```json
> {
>   "extends": [
>     "Kong/public-shared-renovate//security/base",
> "Kong/public-shared-renovate//overrides/security-labels(security)",
>
"Kong/public-shared-renovate//overrides/security-reviewers(team:security-managers)"
>   ]
> }
> ```
>
> #### Timeline
>
> This alias will be removed in **January 2026**.

---

### Release Notes

<details>
<summary>docker/setup-buildx-action
(docker/setup-buildx-action)</summary>

###
[`v3.12.0`](https://redirect.github.com/docker/setup-buildx-action/releases/tag/v3.12.0)

[Compare
Source](https://redirect.github.com/docker/setup-buildx-action/compare/v3.11.1...v3.12.0)

- Deprecate `install` input by
[@&#8203;crazy-max](https://redirect.github.com/crazy-max) in
[#&#8203;455](https://redirect.github.com/docker/setup-buildx-action/pull/455)
- Bump
[@&#8203;docker/actions-toolkit](https://redirect.github.com/docker/actions-toolkit)
from 0.62.1 to 0.63.0 in
[#&#8203;434](https://redirect.github.com/docker/setup-buildx-action/pull/434)
- Bump brace-expansion from 1.1.11 to 1.1.12 in
[#&#8203;436](https://redirect.github.com/docker/setup-buildx-action/pull/436)
- Bump form-data from 2.5.1 to 2.5.5 in
[#&#8203;432](https://redirect.github.com/docker/setup-buildx-action/pull/432)
- Bump undici from 5.28.4 to 5.29.0 in
[#&#8203;435](https://redirect.github.com/docker/setup-buildx-action/pull/435)

**Full Changelog**:
<docker/setup-buildx-action@v3.11.1...v3.12.0>

</details>

---

### Configuration

📅 **Schedule**: Branch creation - Between 12:00 AM and 03:59 AM, only on
Monday ( * 0-3 * * 1 ) (UTC), 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 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/kumahq/kuma-counter-demo).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0Mi41OS4wIiwidXBkYXRlZEluVmVyIjoiNDIuNjYuMTQiLCJ0YXJnZXRCcmFuY2giOiJtYWluIiwibGFiZWxzIjpbImRlcGVuZGVuY2llcyJdfQ==-->

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

Author: renovate[bot]

.github/workflows/release.yaml

@@ -24,7 +24,7 @@ jobs:
       - name: Set up QEMU
         uses: docker/setup-qemu-action@c7c53464625b32c7a7e944ae62b3e17d2b600130 # v3.7.0
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3.11.1
+        uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f # v3.12.0
       - run: curl https://mise.run | sh
       - name: Set up Go
         uses: actions/setup-go@7a3fe6cf4cb3a834922a1244abfce67bcef6a0c5 # v6.2.0