bumping to 7.7.0 babel/core to support babel.config.json

Author: weaverryan

package.json

@@ -25,7 +25,7 @@
   },
   "homepage": "https://github.com/symfony/webpack-encore",
   "dependencies": {
-    "@babel/core": "^7.4.0",
+    "@babel/core": "^7.7.0",
     "@babel/plugin-syntax-dynamic-import": "^7.0.0",
     "@babel/preset-env": "^7.4.0",
     "assets-webpack-plugin": "^3.9.7",

yarn.lock

@@ -18,7 +18,7 @@
     invariant "^2.2.4"
     semver "^5.5.0"
 
-"@babel/core@^7.4.0":
+"@babel/core@^7.7.0":
   version "7.9.6"
   resolved "https://registry.yarnpkg.com/@babel/core/-/core-7.9.6.tgz#d9aa1f580abf3b2286ef40b6904d390904c63376"
   integrity sha512-nD3deLvbsApbHAHttzIssYqgb883yU/d9roe4RZymBCDaZryMJDbptVpEpeQuRh4BJ+SYI8le9YGxKvFEvl1Wg==