Update grafana/tempo Docker tag to v2.8.2 (#1494)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| grafana/tempo | patch | `2.8.1` -> `2.8.2` |

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examples/example-exemplars-tail-sampling/docker-compose.yaml

@@ -52,7 +52,7 @@ services:
       - --enable-feature=native-histograms
       - --config.file=/prometheus.yaml
   tempo:
-    image: grafana/tempo:2.8.1@sha256:bc9245fe3da4e63dc4c6862d9c2dad9bcd8be13d0ba4f7705fa6acda4c904d0e
+    image: grafana/tempo:2.8.2@sha256:0ef775495967cd5d7a6b2e146b6ea695d624803c8db8349fb8ce4164f719f9b7
     network_mode: host
     volumes:
       - ./config/tempo-config.yaml:/config.yaml