chore(deps): update helm general non-major helm releases (#1901)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

charts/stable/uptimerobot-prometheus/Chart.yaml

@@ -3,7 +3,7 @@ appVersion: "0.0.1"
 dependencies:
 - name: common
   repository: https://truecharts.org
-  version: 8.15.2
+  version: 8.15.4
 deprecated: false
 description: Prometheus Exporter for the official uptimerobot CLI
 icon: https://truecharts.org/_static/img/appicons/uptimerobot-prometheus-icon.png
@@ -23,7 +23,7 @@ sources:
   - https://github.com/lekpamartin/uptimerobot_exporter
   - https://github.com/k8s-at-home/charts/tree/master/charts/uptimerobot-prometheus
 type: application
-version: 2.0.20
+version: 2.0.21
 annotations:
   truecharts.org/catagories: |
     - metrics