build: release v1.19.0

[karrui]

What's Changed

• https://github.com/opengovsg/design-system/pull/680
• https://github.com/opengovsg/design-system/pull/687

Dep changes

• https://github.com/opengovsg/design-system/pull/681
• https://github.com/opengovsg/design-system/pull/673

Misc

• https://github.com/opengovsg/design-system/pull/671
• https://github.com/opengovsg/design-system/pull/672

Full Changelog: https://github.com/opengovsg/design-system/compare/v1.18.0...v1.19.0