chore(helm): update image docker.io/nginxinc/nginx-unprivileged digest to 3fbc5ad (#39537)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
|
[docker.io/nginxinc/nginx-unprivileged](https://redirect.github.com/nginx/docker-nginx-unprivileged)
| digest | `ad78b4a` -> `3fbc5ad` |

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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: 37.1.6
+version: 37.1.7
 

charts/premium/nextcloud/values.yaml

@@ -5,7 +5,7 @@ image:
 nginxImage:
   repository: docker.io/nginxinc/nginx-unprivileged
   pullPolicy: IfNotPresent
-  tag: 1.29.1@sha256:ad78b4a52a68a93aa3490260e0bf7b3afd35689d312f22bb28300fbe43a158e5
+  tag: 1.29.1@sha256:3fbc5ad2c00a62a6c175e9a9a3b2de2b3011f3e5d005a091276620b34e1bae39
 imaginaryImage:
   repository: oci.trueforge.org/tccr/nextcloud-imaginary
   pullPolicy: IfNotPresent