Bump typescript from 4.0.3 to 4.0.5 in /backend

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 4.0.3 to 4.0.5.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](microsoft/TypeScript@v4.0.3...v4.0.5)

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

Author: dependabot-preview[bot]

backend/package.json

@@ -18,6 +18,6 @@
     "@types/uuid": "^7.0.0",
     "ts-node-dev": "^1.0.0-pre.60",
     "ts-node": "^9.0.0",
-    "typescript": "^4.0.3"
+    "typescript": "^4.0.5"
   }
 }

backend/yarn.lock

@@ -1020,10 +1020,10 @@ tsconfig@^7.0.0:
     strip-bom "^3.0.0"
     strip-json-comments "^2.0.0"
 
-typescript@^4.0.3:
-  version "4.0.3"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.0.3.tgz#153bbd468ef07725c1df9c77e8b453f8d36abba5"
-  integrity sha512-tEu6DGxGgRJPb/mVPIZ48e69xCn2yRmCgYmDugAVwmJ6o+0u1RI18eO7E7WBTLYLaEVVOhwQmcdhQHweux/WPg==
+typescript@^4.0.5:
+  version "4.0.5"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.0.5.tgz#ae9dddfd1069f1cb5beb3ef3b2170dd7c1332389"
+  integrity sha512-ywmr/VrTVCmNTJ6iV2LwIrfG1P+lv6luD8sUJs+2eI9NLGigaN+nUQc13iHqisq7bra9lnmUSYqbJvegraBOPQ==
 
 upper-case-first@^1.1.0:
   version "1.1.2"