chore(deps): update grafana/promtail docker tag to v3.5.3 (main) (#18542)

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

Author: renovate[bot]

docs/sources/send-data/promtail/cloud/eks/values.yaml

@@ -17,7 +17,7 @@ initContainer:
 
 image:
   repository: grafana/promtail
-  tag: 3.5.2
+  tag: 3.5.3
   pullPolicy: IfNotPresent
   ## Optionally specify an array of imagePullSecrets.
   ## Secrets must be manually created in the namespace.