docker: bump nginxinc/nginx-unprivileged

Bumps nginxinc/nginx-unprivileged from 1.29.0-alpine3.22-slim to 1.29.1-alpine3.22-slim.

---
updated-dependencies:
- dependency-name: nginxinc/nginx-unprivileged
  dependency-version: 1.29.1-alpine3.22-slim
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Dockerfile

@@ -28,7 +28,7 @@ ARG NODE_ENV=production
 RUN npm run build
 
 # skopeo inspect --override-os linux --override-arch amd64 docker://docker.io/nginxinc/nginx-unprivileged:1.29.0-alpine3.22-slim | jq -r '.Digest'
-FROM docker.io/nginxinc/nginx-unprivileged:1.29.0-alpine3.22-slim@sha256:86df552d36eb24c45d3f5becf6423bd056a3fd235d7085fe3d5ea28ba89a8232
+FROM docker.io/nginxinc/nginx-unprivileged:1.29.1-alpine3.22-slim@sha256:76f79f1f3c906a43076086e4517b019b3ab5cc18b3ed1b13417b583e0ab9b298
 USER root
 RUN apk upgrade --no-cache
 USER 101