Update dependency typescript to v3.9.7

Author: renovate-bot

package.json

@@ -20,7 +20,7 @@
     "ts-node": "8.3.0",
     "tsconfig-paths": "3.8.0",
     "type-graphql": "0.17.5",
-    "typescript": "3.5.3"
+    "typescript": "3.9.7"
   },
   "devDependencies": {
     "@types/graphql": "14.2.3",

yarn.lock

@@ -3061,10 +3061,10 @@ type-is@^1.6.16, type-is@~1.6.16:
     media-typer "0.3.0"
     mime-types "~2.1.18"
 
-typescript@3.5.3:
-  version "3.5.3"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.5.3.tgz#c830f657f93f1ea846819e929092f5fe5983e977"
-  integrity sha512-ACzBtm/PhXBDId6a6sDJfroT2pOWt/oOnk4/dElG5G33ZL776N3Y6/6bKZJBFpd+b05F3Ct9qDjMeJmRWtE2/g==
+typescript@3.9.7:
+  version "3.9.7"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.7.tgz#98d600a5ebdc38f40cb277522f12dc800e9e25fa"
+  integrity sha512-BLbiRkiBzAwsjut4x/dsibSTB6yWpwT5qWmC2OfuCg3GgVQCSgMs4vEctYPhsaGtd0AeuuHMkjZ2h2WG8MSzRw==
 
 undefsafe@^2.0.2:
   version "2.0.2"