chore(helm): update chart common 28.18.2 → 28.20.0 (#39869)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [common](https://truecharts.org/charts/library/common)
([source](https://ghcr.io/cloudnative-pg/postgis)) | minor | `28.18.2`
-> `28.20.0` |

---

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

---

### 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:eyJjcmVhdGVkSW5WZXIiOiI0MS44Mi4xMCIsInVwZGF0ZWRJblZlciI6IjQxLjgyLjEwIiwidGFyZ2V0QnJhbmNoIjoibWFzdGVyIiwibGFiZWxzIjpbImF1dG9tZXJnZSIsInJlbm92YXRlL2NvbnRhaW5lciIsInJlbm92YXRlL2hlbG0iLCJ0eXBlL21pbm9yIl19-->

Signed-off-by: Alfred Göppel <43101280+alfi0812@users.noreply.github.com>
Co-authored-by: Alfred Göppel <43101280+alfi0812@users.noreply.github.com>

charts/stable/minecraft-java/Chart.yaml

@@ -12,7 +12,7 @@ apiVersion: v2
 appVersion: 2025.9.2
 dependencies:
   - name: common
-    version: 28.18.2
+    version: 28.20.0
     repository: oci://oci.trueforge.org/truecharts
     condition: ""
     alias: ""
@@ -37,5 +37,5 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/stable/minecraft-java
   - https://hub.docker.com/r/itzg/mc-backup
 type: application
-version: 23.27.2
+version: 23.28.0