Bump nginx from 1.23.3-alpine-slim to 1.25.1-alpine-slim in /docker

Bumps nginx from 1.23.3-alpine-slim to 1.25.1-alpine-slim.

---
updated-dependencies:
- dependency-name: nginx
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

docker/Dockerfile.fe

@@ -10,7 +10,7 @@ RUN for file in html/js/*.js; \
     do minify $file | sponge $file; \
     done
 
-FROM nginx:1.23.3-alpine-slim
+FROM nginx:1.25.1-alpine-slim
 
 COPY --from=build html /usr/share/nginx/html