build(deps): bump nginx from 1.23.3 to 1.23.4 in /deploy/docker

Bumps nginx from 1.23.3 to 1.23.4.

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

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

Author: dependabot[bot]

deploy/docker/Dockerfile

@@ -132,7 +132,7 @@ RUN yarn build
 ## To create a separate image out of it, build it with:
 ##   DOCKER_BUILDKIT=1 docker build -f deploy/docker/Dockerfile -t openblocksdev/openblocks-ce-frontend --target openblocks-ce-frontend .
 ##
-FROM nginx:1.23.3 as openblocks-ce-frontend
+FROM nginx:1.23.4 as openblocks-ce-frontend
 LABEL maintainer="openblocks"
 
 # Change default nginx user into openblocks user