build(deps): update helm release loki to v6.29.0

Author: renovate[bot]

apps/loki/app.yaml

@@ -11,7 +11,7 @@ spec:
   source:
     repoURL: https://grafana.github.io/helm-charts
     chart: loki
-    targetRevision: "6.28.0"
+    targetRevision: "6.29.0"
     helm:
       parameters:
       - name: deploymentMode