chore(helm): update image ghcr.io/ich777/online-check-pushover digest to 1ad48c7 (#29928)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| ghcr.io/ich777/online-check-pushover | digest | `ac58b44` -> `1ad48c7`
|

---

> [!WARNING]
> Some dependencies could not be looked up. Check the Dependency
Dashboard for more information.

Add the preset `:preserveSemverRanges` to your config if you don't want
to pin your dependencies.

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined),
Automerge - At any time (no schedule defined).

🚦 **Automerge**: Enabled.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR has been generated by [Renovate
Bot](https://redirect.github.com/renovatebot/renovate).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzOS44Mi45IiwidXBkYXRlZEluVmVyIjoiMzkuODIuOSIsInRhcmdldEJyYW5jaCI6Im1hc3RlciIsImxhYmVscyI6WyJhdXRvbWVyZ2UiLCJyZW5vdmF0ZS9jb250YWluZXIiLCJ0eXBlL2RpZ2VzdCJdfQ==-->

charts/stable/onlinecheckyourserver/Chart.yaml

@@ -32,4 +32,4 @@ sources:
   - https://ghcr.io/ich777/online-check-pushover
   - https://github.com/truecharts/charts/tree/master/charts/stable/onlinecheckyourserver
 type: application
-version: 7.2.2
+version: 7.2.3

charts/stable/onlinecheckyourserver/values.yaml

@@ -1,7 +1,7 @@
 image:
   pullPolicy: IfNotPresent
   repository: ghcr.io/ich777/online-check-pushover
-  tag: latest@sha256:ac58b449b95cc469a7eef34311140689ed0ef402995afb9fd72b86444908c5e9
+  tag: latest@sha256:1ad48c72c25a975205cff5632671582da48952bd6c2039e5b8d030f2a6400d88
 persistence: {}
 portal:
   open: