v2.55.0: media object, section--style-accent, section borders

What's Changed

• build(deps-dev): bump handlebars from 4.7.8 to 4.7.9 by @dependabot[bot] in #619
• feat(bootstrap4): add media-link for Media object by @wesleyboar in #620, #621
• feat(o-section): add style-accent section variant by @wesleyboar in #623
• feat: restore border between watching sections by @wesleyboar in #624
• fix: section heading color contrast by @wesleyboar in #625

Full Changelog: v2.54.1...v2.55.0