Bump picomatch from 2.3.1 to 2.3.2 in /preview

Bumps [picomatch](https://github.com/micromatch/picomatch) from 2.3.1 to 2.3.2.
- [Release notes](https://github.com/micromatch/picomatch/releases)
- [Changelog](https://github.com/micromatch/picomatch/blob/master/CHANGELOG.md)
- [Commits](https://github.com/micromatch/picomatch/compare/2.3.1...2.3.2)

---
updated-dependencies:
- dependency-name: picomatch
  dependency-version: 2.3.2
  dependency-type: indirect
...

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

preview/package-lock.json

@@ -664,7 +664,9 @@
       "license": "MIT"
     },
     "node_modules/picomatch": {
-      "version": "2.3.1",
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.3.2.tgz",
+      "integrity": "sha512-V7+vQEJ06Z+c5tSye8S+nHUfI51xoXIXjHQ99cQtKUkQqqO1kO/KCJUfZXuB47h/YBlDhah2H3hdUGXn8ie0oA==",
       "license": "MIT",
       "engines": {
         "node": ">=8.6"