upgrade deps (#31)

* Upgrade @types/node to latest.

* Upgrade @types/sharp to latest.

* Upgrade concurrently to latest.

* Upgrade jest to latest.

* Upgrade ts-jest to latest.

* Upgrade typescript to latest.

package.json

@@ -8,14 +8,14 @@
   "license": "MIT",
   "devDependencies": {
     "@types/cross-spawn": "^6.0.1",
-    "@types/jest": "^25.2.1",
-    "@types/node": "^13.11.0",
-    "@types/sharp": "^0.24.0",
-    "concurrently": "^6.1.0",
-    "jest": "^25.2.7",
-    "sharp": "^0.25.2",
-    "ts-jest": "^25.3.1",
-    "typescript": "^3.8.3",
+    "@types/jest": "^27.0.2",
+    "@types/node": "^16.11.4",
+    "@types/sharp": "^0.29.2",
+    "concurrently": "^6.3.0",
+    "jest": "^27.3.1",
+    "sharp": "^0.29.2",
+    "ts-jest": "^27.0.7",
+    "typescript": "^4.4.4",
     "yaml-validator": "^3.0.1"
   },
   "dependencies": {