Bump postcss from 7.0.35 to 7.0.36 in /website

Bumps [postcss](https://github.com/postcss/postcss) from 7.0.35 to 7.0.36.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@7.0.35...7.0.36)

---
updated-dependencies:
- dependency-name: postcss
  dependency-type: indirect
...

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

website/yarn.lock

@@ -7897,9 +7897,9 @@ postcss-zindex@^4.0.1:
     uniqs "^2.0.0"
 
 postcss@^7.0.0, postcss@^7.0.1, postcss@^7.0.14, postcss@^7.0.17, postcss@^7.0.2, postcss@^7.0.27, postcss@^7.0.32, postcss@^7.0.5, postcss@^7.0.6:
-  version "7.0.35"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-7.0.35.tgz#d2be00b998f7f211d8a276974079f2e92b970e24"
-  integrity sha512-3QT8bBJeX/S5zKTTjTCIjRF3If4avAT6kqxcASlTWEtAFCb9NH0OUxNDfgZSWdP5fJnBYCMEWkIFfWeugjzYMg==
+  version "7.0.36"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-7.0.36.tgz#056f8cffa939662a8f5905950c07d5285644dfcb"
+  integrity sha512-BebJSIUMwJHRH0HAQoxN4u1CN86glsrwsW0q7T+/m44eXOUAxSNdHRkNZPYz5vVUbg17hFgOQDE7fZk7li3pZw==
   dependencies:
     chalk "^2.4.2"
     source-map "^0.6.1"