chore(deps): update redis docker digest to 315270d (#1912)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

docker-compose.prometheus.yaml

@@ -7,7 +7,7 @@ services:
     volumes:
       - ./docker/prometheus/prometheus.yml:/etc/prometheus/prometheus.yml
   redis:
-    image: redis@sha256:7b6fb55d8b0adcd77269dc52b3cfffe5f59ca5d43dec3c90dbe18aacce7942e1
+    image: redis@sha256:315270d166080f537bbdf1b489b603aaaa213cb55a544acfa51feb7481abb1c0
     ports:
         - 6379:6379
   web: