Bump postcss from 7.0.17 to 7.0.36 in /02-preprocess

Bumps [postcss](https://github.com/postcss/postcss) from 7.0.17 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@7.0.17...7.0.36)

---
updated-dependencies:
- dependency-name: postcss
  dependency-type: direct:development
...

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

Author: dependabot[bot]

02-preprocess/package-lock.json

@@ -16,7 +16,7 @@
     "autoprefixer": "^9.6.1",
     "endorphin": "^0.5.2",
     "mkdirp": "^0.5.1",
-    "postcss": "^7.0.17",
+    "postcss": "^7.0.36",
     "rollup": "^1.17.0",
     "rollup-plugin-node-resolve": "^5.2.0",
     "rollup-plugin-typescript2": "^0.22.0",