Bump node from 14.17.6-slim to 14.18.0-slim in /docker/node
Bump node from 14.17.6-slim to 14.18.0-slim in /docker/node

Bumps node from 14.17.6-slim to 14.18.0-slim.

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

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
mozilla/ichnaea,mozilla/ichnaea,mozilla/ichnaea,mozilla/ichnaea