chore(helm): update image docker.io/nginxinc/nginx-unprivileged digest to f78874a (#35090)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
|
[docker.io/nginxinc/nginx-unprivileged](https://redirect.github.com/nginx/docker-nginx-unprivileged)
| digest | `aa538e1` -> `f78874a` |

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charts/premium/nextcloud/Chart.yaml

@@ -52,5 +52,5 @@ sources:
   - https://hub.docker.com/r/collabora/code
   - https://hub.docker.com/r/nginxinc/nginx-unprivileged
 type: application
-version: 34.0.2
+version: 34.0.3
 

charts/premium/nextcloud/values.yaml

@@ -5,7 +5,7 @@ image:
 nginxImage:
   repository: docker.io/nginxinc/nginx-unprivileged
   pullPolicy: IfNotPresent
-  tag: 1.28.0@sha256:aa538e1dc81068827c28ad5855bbd721f0f17a3d303f4b5d6737ddc219d1c8c6
+  tag: 1.28.0@sha256:f78874a7cd6c4dd8a5d33a287c7a09a2a4ae8717fc843500246d5b69b9dcb239
 imaginaryImage:
   repository: tccr.io/tccr/nextcloud-imaginary
   pullPolicy: IfNotPresent