Bump @tailwindcss/postcss7-compat from 2.0.2 to 2.0.4 in /website

Bumps [@tailwindcss/postcss7-compat](https://github.com/tailwindlabs/tailwindcss) from 2.0.2 to 2.0.4.
- [Release notes](https://github.com/tailwindlabs/tailwindcss/releases)
- [Changelog](https://github.com/tailwindlabs/tailwindcss/blob/master/CHANGELOG.md)
- [Commits](tailwindlabs/tailwindcss@v2.0.2...v2.0.4)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

website/package-lock.json

@@ -16,7 +16,7 @@
     "@docusaurus/core": "2.0.0-alpha.70",
     "@docusaurus/preset-classic": "2.0.0-alpha.70",
     "@mdx-js/react": "^1.6.21",
-    "@tailwindcss/postcss7-compat": "^2.0.2",
+    "@tailwindcss/postcss7-compat": "^2.0.4",
     "autoprefixer": "^9.8.6",
     "clsx": "^1.1.1",
     "docusaurus-tailwindcss-loader": "file:plugins/postcss-tailwindcss-loader",