fix: compatibility with node@8

package.json

@@ -60,12 +60,12 @@
     "loader-utils": "^1.2.3",
     "neo-async": "^2.6.1",
     "schema-utils": "^2.6.1",
-    "semver": "^7.1.1"
+    "semver": "^6.3.0"
   },
   "devDependencies": {
-    "@babel/cli": "^7.7.7",
-    "@babel/core": "^7.7.7",
-    "@babel/preset-env": "^7.7.7",
+    "@babel/cli": "^7.8.0",
+    "@babel/core": "^7.8.0",
+    "@babel/preset-env": "^7.8.2",
     "@commitlint/cli": "^8.3.4",
     "@commitlint/config-conventional": "^8.3.4",
     "@webpack-contrib/defaults": "^6.3.0",
@@ -75,15 +75,15 @@
     "bootstrap-sass": "^3.4.1",
     "commitlint-azure-pipelines-cli": "^1.0.3",
     "cross-env": "^6.0.3",
-    "css-loader": "^3.4.1",
+    "css-loader": "^3.4.2",
     "del": "^5.1.0",
     "del-cli": "^3.0.0",
     "eslint": "^6.8.0",
     "eslint-config-prettier": "^6.9.0",
-    "eslint-plugin-import": "^2.19.1",
+    "eslint-plugin-import": "^2.20.0",
     "fibers": "^4.0.2",
     "file-loader": "^5.0.2",
-    "husky": "^4.0.6",
+    "husky": "^4.0.7",
     "jest": "^24.9.0",
     "jest-junit": "^10.0.0",
     "jquery": "^3.4.1",