chore(helm): update image docker.io/nginxinc/nginx-unprivileged digest to 76fb15a (#32489)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
|
[docker.io/nginxinc/nginx-unprivileged](https://redirect.github.com/nginxinc/docker-nginx-unprivileged)
| digest | `840f333` -> `76fb15a` |

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to pin your dependencies.

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charts/premium/nextcloud/Chart.yaml

@@ -49,4 +49,4 @@ sources:
   - https://hub.docker.com/r/collabora/code
   - https://hub.docker.com/r/nginxinc/nginx-unprivileged
 type: application
-version: 32.9.10
+version: 32.9.11

charts/premium/nextcloud/values.yaml

@@ -5,7 +5,7 @@ image:
 nginxImage:
   repository: docker.io/nginxinc/nginx-unprivileged
   pullPolicy: IfNotPresent
-  tag: 1.27.4@sha256:840f33319fb642e32a15a1772400e017e1175891c98afdff3a47871c925cb0e9
+  tag: 1.27.4@sha256:76fb15abad2b5d5f71c5c0de087c364050eb318255797bf855990e36cea24a1c
 imaginaryImage:
   repository: tccr.io/tccr/nextcloud-imaginary
   pullPolicy: IfNotPresent