chore(deps): update nginx:alpine docker digest to 289deca

Author: renovate[bot]

balancer/Dockerfile

@@ -1,4 +1,4 @@
-FROM nginx:alpine@sha256:44e208ac2000daeff77c27a409d1794d6bbdf52067de627c2da13e36c7d59582
+FROM nginx:alpine@sha256:289decab414250121a93c3f1b8316b9c69906de3a4993757c424cb964169ad42
 RUN apk add gettext
 COPY ./nginx.conf /etc/nginx/nginx.conf
 CMD envsubst '\$DOMAIN' < /etc/nginx/nginx.conf > /etc/nginx/nginx.conf && nginx -g 'daemon off;'