chore: update babel to v7

Author: sapphi-red

.babelrc

@@ -1,5 +1,5 @@
 {
   "presets": [
-    ["env", {"targets": {"node": "6"}}]
+    ["@babel/env", {"targets": {"node": "6"}}]
   ]
 }

.eslintrc

@@ -8,7 +8,7 @@
     "es6": true,
     "jest/globals": true
   },
-  "parser": "babel-eslint",
+  "parser": "@babel/eslint-parser",
   "plugins": ["jest"],
   "rules": {
     "import/no-extraneous-dependencies": 0