build: update babel monorepo (#480)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

package.json

@@ -33,9 +33,9 @@
     "size": "lerna exec size-limit"
   },
   "devDependencies": {
-    "@babel/cli": "~7.11.0",
-    "@babel/core": "~7.11.0",
-    "@babel/preset-env": "~7.11.0",
+    "@babel/cli": "~7.12.0",
+    "@babel/core": "~7.12.0",
+    "@babel/preset-env": "~7.12.0",
     "@rollup/plugin-babel": "~5.2.0",
     "axios": "~0.19.2",
     "axios-mock-adapter": "~1.18.0",