chore(deps-dev): Add @guardian/eslint-config@14.0.0

This version fixes an issue where `eslint-plugin-storybook` and
`storybook` were being added as transitive dependencies, even when not used.

See https://github.com/guardian/csnx/releases/tag/%40guardian%2Feslint-config%4014.0.0.

Author: akash1810