chore: Upgrade Babel

Somewhere around @babel/*@7.8 are some weird module resolution bugs that
was giving me odd errors. Upgrading fixes these.

We can remove a number of dependencies from each test package, to allow
module resolution to find the common dependencies in the root package.

Author: vvanpo

e2e/__projects__/basic/package.json

@@ -7,13 +7,7 @@
   "scripts": {
     "test": "jest --no-cache --coverage test.js"
   },
-  "dependencies": {
-    "vue": "3.0.0-alpha.10"
-  },
   "devDependencies": {
-    "@babel/core": "^7.2.2",
-    "@babel/preset-env": "^7.2.3",
-    "@vue/compiler-sfc": "3.0.0-alpha.10",
     "babel-helper-vue-jsx-merge-props": "^2.0.3",
     "babel-plugin-syntax-jsx": "^6.18.0",
     "babel-plugin-transform-vue-jsx": "^3.7.0",