Bump nginx from 1.17.8-alpine to 1.23.3-alpine in /docker/frontend#335

dependabot[bot] wants to merge 1 commit intomasterhunicus/mempool:masterfrom

dependabot/docker/docker/frontend/nginx-1.23.3-alpinehunicus/mempool:dependabot/docker/docker/frontend/nginx-1.23.3-alpineCopy head branch name to clipboard