Fix security issues

Author: firecow

package-lock.json

@@ -25,7 +25,7 @@
     "glob": "^7.1.6",
     "pretty-hrtime": "^1.0.3",
     "yaml": "^1.10.0",
-    "yargs": "^15.3.1"
+    "yargs": "^15.4.0"
   },
   "pkg": {
     "targets": [
@@ -37,15 +37,15 @@
   "devDependencies": {
     "@types/deep-extend": "^0.4.31",
     "@types/fs-extra": "^9.0.1",
-    "@types/js-yaml": "^3.12.4",
+    "@types/js-yaml": "^3.12.5",
     "@types/pretty-hrtime": "^1.0.0",
     "@types/shelljs": "^0.8.8",
     "@types/yaml": "^1.9.7",
     "@types/yargs": "^15.0.5",
     "npm-check-updates": "^7.0.1",
-    "pkg": "^4.4.8",
+    "pkg": "^4.4.9",
     "source-map-support": "^0.5.19",
     "tslint": "^6.1.2",
-    "typescript": "^3.9.5"
+    "typescript": "^3.9.6"
   }
 }