chore(deps): update redis docker tag to v8 (#39888)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| redis | final | major | `7.4.3` -> `8.0.0` |

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receiver/redisreceiver/testdata/integration/Dockerfile.cluster

@@ -1,5 +1,5 @@
 # Use the official Redis image as the base
-FROM redis:7.4.3
+FROM redis:8.0.0
 
 RUN apt update && apt install --assume-yes socat