chore(deps): fix pkg dependencies (peer)

BREAKING CHANGE: ecomplus/utils and core-js no more direct dependencies

package.json

@@ -29,25 +29,29 @@
     "url": "https://github.com/ecomclub/shopping-cart/issues"
   },
   "homepage": "https://github.com/ecomclub/shopping-cart#readme",
+  "peerDependencies": {
+    "@ecomplus/utils": "1.x",
+    "core-js": "3.x"
+  },
   "dependencies": {
-    "@ecomplus/utils": "^1.2.1",
-    "core-js": "^3.4.5",
     "eventemitter3": "^4.0.0"
   },
   "devDependencies": {
-    "@babel/core": "^7.7.4",
-    "@babel/preset-env": "^7.7.4",
+    "@babel/core": "^7.7.7",
+    "@babel/preset-env": "^7.7.7",
     "@commitlint/cli": "^8.2.0",
     "@commitlint/config-conventional": "^8.2.0",
+    "@ecomplus/utils": "^1.2.6",
     "babel-loader": "^8.0.6",
+    "core-js": "^3.6.1",
     "docdash": "^1.1.1",
     "husky": "^3.1.0",
     "jsdoc": "^3.6.3",
     "standard": "^14.3.1",
     "standard-version": "^7.0.1",
-    "webpack": "^4.41.2",
+    "webpack": "^4.41.4",
     "webpack-cli": "^3.3.10",
-    "webpack-dev-server": "^3.9.0"
+    "webpack-dev-server": "^3.10.1"
   },
   "husky": {
     "hooks": {