Switch to ESLint@9 in `ckeditor/ckeditor5-vue`

[pomek]

Provide a description of the task

Part of ckeditor/ckeditor5#18475.

Definition of Done

• A pull request should target the #epic/ck/18475-eslint9 branch.
• This repository uses ESLint@9.
• Upgrade the minimal Node.js version to 22.0.0 because ESLint v9 requires Node version to match the range: ^18.18.0 || ^20.9.0 || >=21.1.0.
• Fix the potential issues reported by ESLint.
• Update the release scripts to remove the engines.node property from the published npm package.

Technical details

• If the epic branch does not exist, create it on your own:

  git checkout master && \
  git fetch && \
  git checkout -b epic/ck/18475-eslint9