Release 6.7.3

What's Changed

• chore(deps): bump flatted from 3.4.1 to 3.4.2 by @dependabot[bot] in #1381
• Refactor LayoutHelper by @didoda in #1382
• Fix ui for first related in index-cell by @didoda in #1383

Full Changelog: v6.7.2...v6.7.3