Update Helm release alloy to v1.2.1

Author: renovate[bot]

fleet/lib/alloy/fleet.yaml

@@ -8,7 +8,7 @@ helm:
   chart: &chart alloy
   releaseName: *chart
   repo: https://grafana.github.io/helm-charts
-  version: 1.2.0
+  version: 1.2.1
   timeoutSeconds: 600
   waitForJobs: true
   valuesFiles: