chore(deps-dev): bump @tailwindcss/postcss7-compat from 2.0.3 to 2.1.2

Bumps [@tailwindcss/postcss7-compat](https://github.com/tailwindlabs/tailwindcss) from 2.0.3 to 2.1.2.
- [Release notes](https://github.com/tailwindlabs/tailwindcss/releases)
- [Changelog](https://github.com/tailwindlabs/tailwindcss/blob/master/CHANGELOG.md)
- [Commits](tailwindlabs/tailwindcss@v2.0.3...v2.1.2)

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]