chore(deps): update ghcr.io/shopify/toxiproxy docker tag to v2.12.0 (#3171)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
|
[ghcr.io/shopify/toxiproxy](https://redirect.github.com/Shopify/toxiproxy)
| minor | `2.4.0` -> `2.12.0` |

---

### 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 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/IBM/sarama).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0MC4xNi4wIiwidXBkYXRlZEluVmVyIjoiNDAuMTYuMCIsInRhcmdldEJyYW5jaCI6Im1haW4iLCJsYWJlbHMiOltdfQ==-->

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

Author: renovate[bot]

docker-compose.yml

@@ -275,7 +275,7 @@ services:
       KAFKA_JVM_PERFORMANCE_OPTS: "-XX:+IgnoreUnrecognizedVMOptions"
   toxiproxy:
     container_name: 'toxiproxy'
-    image: 'ghcr.io/shopify/toxiproxy:2.4.0'
+    image: 'ghcr.io/shopify/toxiproxy:2.12.0'
     init: true
     healthcheck:
       test: ['CMD', '/toxiproxy-cli', 'l']