fix(helm): bump nginx-unprivilege to fix CVE (#10754)

**What this PR does / why we need it**:

**Which issue(s) this PR fixes**:
Fixes #10746 

**Special notes for your reviewer**:

**Checklist**
- [x] Reviewed the
[`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md)
guide (**required**)
- [ ] Documentation added
- [ ] Tests updated
- [x] `CHANGELOG.md` updated
- [ ] If the change is worth mentioning in the release notes, add
`add-to-release-notes` label
- [ ] Changes that require user attention or interaction to upgrade are
documented in `docs/sources/setup/upgrade/_index.md`
- [x] For Helm chart changes bump the Helm chart version in
`production/helm/loki/Chart.yaml` and update
`production/helm/loki/CHANGELOG.md` and
`production/helm/loki/README.md`. [Example
PR](d10549e)

docs/sources/setup/install/helm/reference.md

@@ -1116,7 +1116,7 @@ null
 			<td>string</td>
 			<td>The gateway image tag</td>
 			<td><pre lang="json">
-"1.23-alpine"
+"1.24-alpine"
 </pre>
 </td>
 		</tr>

production/helm/loki/CHANGELOG.md

@@ -13,6 +13,9 @@ Entries should include a reference to the pull request that introduced the chang
 
 [//]: # (<AUTOMATED_UPDATES_LOCATOR> : do not remove this line. This locator is used by the CI pipeline to automatically create a changelog entry for each new Loki release. Add other chart versions and respective changelog entries bellow this line.)
 
+## 5.27.0
+- [CHANGE] Bump `nginxinc/nginx-unpriviledged` image version to remediate [CVE-2023-4863](https://github.com/advisories/GHSA-j7hp-h8jx-5ppr)
+
 ## 5.26.0
 
 - [ENHANCEMENT] Allow emptyDir data volumes for backend and write (via `X.persistence.volumeClaimsEnabled: false`)

production/helm/loki/Chart.yaml

@@ -3,7 +3,7 @@ name: loki
 description: Helm chart for Grafana Loki in simple, scalable mode
 type: application
 appVersion: 2.9.1
-version: 5.26.0
+version: 5.27.0
 home: https://grafana.github.io/helm-charts
 sources:
   - https://github.com/grafana/loki

production/helm/loki/README.md

@@ -1,6 +1,6 @@
 # loki
 
-![Version: 5.26.0](https://img.shields.io/badge/Version-5.26.0-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 2.9.1](https://img.shields.io/badge/AppVersion-2.9.1-informational?style=flat-square)
+![Version: 5.27.0](https://img.shields.io/badge/Version-5.27.0-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 2.9.1](https://img.shields.io/badge/AppVersion-2.9.1-informational?style=flat-square)
 
 Helm chart for Grafana Loki in simple, scalable mode
 

production/helm/loki/values.yaml

@@ -1269,7 +1269,7 @@ gateway:
     # -- The gateway image repository
     repository: nginxinc/nginx-unprivileged
     # -- The gateway image tag
-    tag: 1.23-alpine
+    tag: 1.24-alpine
     # -- Overrides the gateway image tag with an image digest
     digest: null
     # -- The gateway image pull policy