Bump zipp from 3.20.0 to 3.21.0 (#2270)

Bumps [zipp](https://github.com/jaraco/zipp) from 3.20.0 to 3.21.0.
- [Release notes](https://github.com/jaraco/zipp/releases)
- [Changelog](https://github.com/jaraco/zipp/blob/main/NEWS.rst)
- [Commits](jaraco/zipp@v3.20.0...v3.21.0)

---
updated-dependencies:
- dependency-name: zipp
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

app/backend/requirements.txt

@@ -450,7 +450,7 @@ wsproto==1.2.0
     # via hypercorn
 yarl==1.17.2
     # via aiohttp
-zipp==3.20.0
+zipp==3.21.0
     # via importlib-metadata
 
 # The following packages are considered to be unsafe in a requirements file: