chore(deps): bump nginx in /ui/packages/ce

Bumps nginx from 1.20.1-alpine to 1.29.6-alpine.

---
updated-dependencies:
- dependency-name: nginx
  dependency-version: 1.29.6-alpine
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

ui/packages/ce/Dockerfile

@@ -21,7 +21,7 @@ RUN apk add --no-cache --update git && \
     pnpm --filter @postgres.ai/ce build
 
 # Run phase.
-FROM nginx:1.20.1-alpine as run
+FROM nginx:1.29.6-alpine as run
 
 COPY --from=build /app/packages/ce/build /srv/ce
 COPY ./ui/packages/ce/nginx.conf /etc/nginx/conf.d/ce.conf.template