Bump nginxinc/nginx-unprivileged in /app

Bumps nginxinc/nginx-unprivileged from 1.27.0-alpine-slim to 1.27.1-alpine-slim.

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

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

app/Dockerfile

@@ -13,7 +13,7 @@ WORKDIR /site
 COPY . .
 RUN hugo -v -s /site -d /site/public
 
-FROM nginxinc/nginx-unprivileged:1.27.0-alpine-slim
+FROM nginxinc/nginx-unprivileged:1.27.1-alpine-slim
 USER 1000
 COPY config/nginx.conf /etc/nginx/conf.d/default.conf
 COPY --from=build /site/public /usr/share/nginx/html