Adding Redis 8.4 RC1 image to test matrix.

Author: petyaslavova

.github/workflows/integration.yaml

@@ -76,7 +76,7 @@ jobs:
       max-parallel: 15
       fail-fast: false
       matrix:
-        redis-version: ['8.4-M01-pre', '${{ needs.redis_version.outputs.CURRENT }}', '8.0.2' ,'7.4.4', '7.2.9']
+        redis-version: ['8.4-RC1-pre', '${{ needs.redis_version.outputs.CURRENT }}', '8.0.2' ,'7.4.4', '7.2.9']
         python-version: ['3.9', '3.13']
         parser-backend: ['plain']
         event-loop: ['asyncio']