change typescript version to one that actually exists

Author: DetachHead

package-lock.json

@@ -41,7 +41,7 @@
     "reflect-metadata": ">=0.1.12"
   },
   "peerDependencies": {
-    "typescript": "^4.1.0"
+    "typescript": "^4.1.5"
   },
   "devDependencies": {
     "@types/mocha": "^7.0.1",
@@ -54,6 +54,6 @@
     "ts-node": "^8.6.2",
     "tslint": "^6.0.0",
     "ttypescript": "^1.5.10",
-    "typescript": "4.1.0"
+    "typescript": "4.1.5"
   }
 }