Update Dockerfile.zoekt-ci-image-1.2

What does this MR do and why?

Updates zoekt-webserver to newer commit: fcb279ae404c0aa102121b28257143ad16e77482.

• Update CNG docker image gitlab-org/build/CNG!1489 (merged)
• Update GDK gitlab-development-kit!3324 (merged)
• Update CI docker image: !713 (merged) 👈 (this MR)

Checklist

• (If applicable) Add patches if required for upgrading Ruby version in https://gitlab.com/gitlab-org/gitlab-build-images/-/tree/master/patches/ruby.