upgrade typescript

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@sapphirecode/snippeteer",
-  "version": "1.4.6",
+  "version": "1.4.7",
   "description": "macros for setting up projects or project parts",
   "main": "index.js",
   "bin": {
@@ -31,7 +31,7 @@
     "@types/fs-extra": "^9.0.0",
     "@types/node": "^14.0.1",
     "eslint": "^7.0.0",
-    "typescript": "^3.8.3"
+    "typescript": "^4.0.2"
   },
   "dependencies": {
     "@sapphirecode/standard": "^1.0.1",
@@ -46,4 +46,4 @@
     "snippet",
     "template"
   ]
-}
+}

yarn.lock

@@ -1508,10 +1508,10 @@ typedarray-to-buffer@^3.1.5:
   dependencies:
     is-typedarray "^1.0.0"
 
-typescript@^3.8.3:
-  version "3.9.7"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.7.tgz#98d600a5ebdc38f40cb277522f12dc800e9e25fa"
-  integrity sha512-BLbiRkiBzAwsjut4x/dsibSTB6yWpwT5qWmC2OfuCg3GgVQCSgMs4vEctYPhsaGtd0AeuuHMkjZ2h2WG8MSzRw==
+typescript@^4.0.2:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.0.2.tgz#7ea7c88777c723c681e33bf7988be5d008d05ac2"
+  integrity sha512-e4ERvRV2wb+rRZ/IQeb3jm2VxBsirQLpQhdxplZ2MEzGvDkkMmPglecnNDfSUBivMjP93vRbngYYDQqQ/78bcQ==
 
 unique-string@^2.0.0:
   version "2.0.0"