chore(deps): update gcr.io/prysmaticlabs/prysm/beacon-chain docker tag to v6.0.3

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

Author: renovate[bot]

charts/prysm/values.yaml

@@ -177,7 +177,7 @@ sidecar:
 image:
   registry: "gcr.io"
   repository: "prysmaticlabs/prysm/beacon-chain"
-  tag: "v6.0.1"
+  tag: "v6.0.3"
   pullPolicy: IfNotPresent
 imageGnosis:
   registry: "ghcr.io"