chore(helm): update image docker.io/nginxinc/nginx-unprivileged digest to b58f87c (#39990)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
|
[docker.io/nginxinc/nginx-unprivileged](https://redirect.github.com/nginx/docker-nginx-unprivileged)
| digest | `3fbc5ad` -> `b58f87c` |

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charts/premium/nextcloud/Chart.yaml

@@ -50,5 +50,5 @@ sources:
   - https://hub.docker.com/r/collabora/code
   - https://hub.docker.com/r/nginxinc/nginx-unprivileged
 type: application
-version: 37.5.1
+version: 37.5.2
 

charts/premium/nextcloud/values.yaml

@@ -5,7 +5,7 @@ image:
 nginxImage:
   repository: docker.io/nginxinc/nginx-unprivileged
   pullPolicy: IfNotPresent
-  tag: 1.29.1@sha256:3fbc5ad2c00a62a6c175e9a9a3b2de2b3011f3e5d005a091276620b34e1bae39
+  tag: 1.29.1@sha256:b58f87ce18de66dbc5bd2b557e20d509e445c12be59c0444d5c6acf5bcacc0f2
 imaginaryImage:
   repository: oci.trueforge.org/tccr/nextcloud-imaginary
   pullPolicy: IfNotPresent