chore(deps): update helm release filebeat to v8

| datasource | package  | from   | to    |
| ---------- | -------- | ------ | ----- |
| helm       | filebeat | 7.17.3 | 8.5.1 |


Signed-off-by: renovate-sh-app[bot] <219655108+renovate-sh-app[bot]@users.noreply.github.com>

Author: renovate-sh-app[bot]

charts/loki-stack/requirements.yaml

@@ -21,7 +21,7 @@ dependencies:
   repository:  "https://prometheus-community.github.io/helm-charts"
 - name: "filebeat"
   condition: filebeat.enabled
-  version: "~7.17.1"
+  version: "~8.5.0"
   repository:  "https://helm.elastic.co"
 - name: "logstash"
   condition: logstash.enabled