chore(syslog-ng): update image docker.io/balabit/syslog-ng digest to b537102 (#47852)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
|
[docker.io/balabit/syslog-ng](https://redirect.github.com/syslog-ng/syslog-ng)
| digest | `f989b74` → `b537102` |

---

> [!WARNING]
> Some dependencies could not be looked up. Check the [Dependency
Dashboard](../issues/18710) for more information.

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

---

### Configuration

📅 **Schedule**: (UTC)

- 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:eyJjcmVhdGVkSW5WZXIiOiI0My4xMzAuMSIsInVwZGF0ZWRJblZlciI6IjQzLjEzMC4xIiwidGFyZ2V0QnJhbmNoIjoibWFzdGVyIiwibGFiZWxzIjpbImFwcC9zeXNsb2ctbmciLCJhdXRvbWVyZ2UiLCJyZW5vdmF0ZS9jb250YWluZXIiLCJ0eXBlL2RpZ2VzdCJdfQ==-->

charts/stable/syslog-ng/Chart.yaml

@@ -34,5 +34,5 @@ sources:
   - https://github.com/trueforge-org/truecharts/tree/master/charts/stable/syslog-ng
   - https://hub.docker.com/r/balabit/syslog-ng
 type: application
-version: 13.2.0
+version: 13.2.1
 

charts/stable/syslog-ng/values.yaml

@@ -2,7 +2,7 @@
 image:
   repository: docker.io/balabit/syslog-ng
   pullPolicy: IfNotPresent
-  tag: 4.11.0@sha256:f989b74bad3855af0cbdad14ed414c0f7113c7ff04ba4b37fabacb1a108e2f05
+  tag: 4.11.0@sha256:b5371023a5bc7ae97b629455d11e34d8f6e154f2b75a856c73ed732ae03836b9
 service:
   main:
     ports: