Ensure or synchronize the node version between HTTP router and the node image

The following discussion from !738 (merged) should be addressed:

• @godfat-gitlab started a discussion:

  I just noticed that we might need to downgrade this, or introduce another image with an older version. HTTP router is using 22.14.0: https://gitlab.com/gitlab-org/cells/http-router/-/blob/3e12eb3ee23acb67cef94202ae005a7e6e9af291/.tool-versions

  Alternatively, we can try to upgrade node in HTTP router to match this version.

  We need to have a way to synchronize the versions though, nevertheless. What's the best way to make sure the versions match? /cc @bmarjanovic