Run pipeline tests against latest 8.0 RC1 image. (#3585)

Author: petyaslavova

.github/workflows/integration.yaml

@@ -74,7 +74,7 @@ jobs:
       max-parallel: 15
       fail-fast: false
       matrix:
-        redis-version: ['8.0-M05-pre', '${{ needs.redis_version.outputs.CURRENT }}', '7.2.7', '6.2.17']
+        redis-version: ['8.0-RC1-pre', '${{ needs.redis_version.outputs.CURRENT }}', '7.2.7', '6.2.17']
         python-version: ['3.8', '3.13']
         parser-backend: ['plain']
         event-loop: ['asyncio']