Bump jszip from 3.7.1 to 3.9.0

Bumps [jszip](https://github.com/Stuk/jszip) from 3.7.1 to 3.9.0.
- [Release notes](https://github.com/Stuk/jszip/releases)
- [Changelog](https://github.com/Stuk/jszip/blob/master/CHANGES.md)
- [Commits](https://github.com/Stuk/jszip/compare/v3.7.1...v3.9.0)

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

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

packages/backend/package.json

@@ -68,7 +68,7 @@
     "form-data": "^4.0.0",
     "formidable": "2.0.1",
     "jsonwebtoken": "8.5.1",
-    "jszip": "3.7.1",
+    "jszip": "3.9.0",
     "mdast-util-to-string": "2",
     "mocha": "^8.3.2",
     "mongodb-memory-server": "^8.3.0",

yarn.lock

@@ -15722,10 +15722,10 @@ jss@10.9.0, jss@^10.5.1:
     array-includes "^3.1.3"
     object.assign "^4.1.2"
 
-jszip@3.7.1:
-  version "3.7.1"
-  resolved "https://registry.yarnpkg.com/jszip/-/jszip-3.7.1.tgz#bd63401221c15625a1228c556ca8a68da6fda3d9"
-  integrity sha512-ghL0tz1XG9ZEmRMcEN2vt7xabrDdqHHeykgARpmZ0BiIctWxM47Vt63ZO2dnp4QYt/xJVLLy5Zv1l/xRdh2byg==
+jszip@3.9.0:
+  version "3.9.0"
+  resolved "https://registry.yarnpkg.com/jszip/-/jszip-3.9.0.tgz#511b26718aca5f3a553d1f8e072dfd0efdc74481"
+  integrity sha512-Vb3SMfASUN1EKrFzv5A5+lTaZnzLzT5E6A9zyT7WFqMSfhT2Z7iS5FgSOjx2Olm3MDj8OqKj6GHyP2kMt1Ir6w==
   dependencies:
     lie "~3.3.0"
     pako "~1.0.2"