Bump picomatch from 2.3.1 to 2.3.2 in /backend

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>

backend/yarn.lock

@@ -2239,9 +2239,9 @@ pgpass@1.0.5:
     split2 "^4.1.0"
 
 picomatch@^2.0.4, picomatch@^2.2.1:
-  version "2.3.1"
-  resolved "https://registry.yarnpkg.com/picomatch/-/picomatch-2.3.1.tgz#3ba3833733646d9d3e4995946c1365a67fb07a42"
-  integrity sha512-JU3teHTNjmE2VCGFzuY8EXzCDVwEqB2a8fsIvwaStHhAWJEeVd1o1QD80CU6+ZdEXXSLbSsuLwJjkCBWqRQUVA==
+  version "2.3.2"
+  resolved "https://registry.yarnpkg.com/picomatch/-/picomatch-2.3.2.tgz#5a942915e26b372dc0f0e6753149a16e6b1c5601"
+  integrity sha512-V7+vQEJ06Z+c5tSye8S+nHUfI51xoXIXjHQ99cQtKUkQqqO1kO/KCJUfZXuB47h/YBlDhah2H3hdUGXn8ie0oA==
 
 pify@^3.0.0:
   version "3.0.0"