chore(deps): update helm release mongodb to 0.6.9

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

Author: renovate[bot]

gitops/argocd/charts/chaos/litmus-chaos/Chart.yaml

@@ -32,4 +32,4 @@ dependencies:
   version: 3.6.0
 - name: mongodb
   repository: https://groundhog2k.github.io/helm-charts
-  version: 0.6.2
+  version: 0.6.9