chore(deps): update helm release robusta to 0.29.2

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

Author: renovate[bot]

gitops/argocd/charts/alerting/robusta/Chart.yaml

@@ -10,4 +10,4 @@ appVersion: 1.0.0
 dependencies:
 - name: robusta
   repository: https://robusta-charts.storage.googleapis.com
-  version: 0.20.0
+  version: 0.29.2