Update grafana/tempo:latest Docker digest to b613f54 (#16)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| grafana/tempo | digest | `21d5638` -> `b613f54` |

---

### 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 has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0MS4xMjcuMiIsInVwZGF0ZWRJblZlciI6IjQxLjEzMi41IiwidGFyZ2V0QnJhbmNoIjoibWFzdGVyIiwibGFiZWxzIjpbXX0=-->

Reviewed-on: #16
Co-authored-by: Renovate Bot <renovate-bot@valverde.cloud>
Co-committed-by: Renovate Bot <renovate-bot@valverde.cloud>

compose.yml

@@ -48,7 +48,7 @@ services:
 
   tempo:
     <<: *service-base
-    image: grafana/tempo:latest@sha256:21d563828e55c2ee4e79f9a4bf9e1abfa4f585213f9f5e49d9b98e44fac92f2c
+    image: grafana/tempo:latest@sha256:b613f54818081f45e20a6bdb5669f6ae583149a0bdd4a658120f9265ccdfdb39
     command: [-config.file=/etc/tempo.yaml]
     volumes:
       - ./telemetry/tempo.yaml:/etc/tempo.yaml