[Security] Bump class-transformer from 0.2.3 to 0.3.1

Bumps [class-transformer](https://github.com/typestack/class-transformer) from 0.2.3 to 0.3.1. **This update includes a security fix.**
- [Release notes](https://github.com/typestack/class-transformer/releases)
- [Changelog](https://github.com/typestack/class-transformer/blob/develop/CHANGELOG.md)
- [Commits](typestack/class-transformer@v0.2.3...v0.3.1)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

package-lock.json

@@ -32,7 +32,7 @@
     "@nestjs/websockets": "^7.3.2",
     "@prisma/client": "^2.2.2",
     "bcryptjs": "^2.4.3",
-    "class-transformer": "^0.2.3",
+    "class-transformer": "^0.3.1",
     "class-validator": "^0.12.2",
     "fs-extra": "^9.0.1",
     "passport": "^0.4.1",