Update package.json: Re-add @vue/cli-plugin-babel dependency to version 3.12.1 in devDependencies.

package.json

@@ -51,6 +51,7 @@
     "vm-browserify": "^1.1.2",
     "vue": "^3.4.30",
     "vue-multiselect": "^3.0.0",
+    "@vue/cli-plugin-babel": "^3.12.1",
     "vue-quill-editor": "^3.0.6",
     "vue-router": "^4.3.3",
     "vuex": "^4.0.2"
@@ -58,7 +59,6 @@
   "devDependencies": {
     "@babel/core": "^7.12.16",
     "@babel/eslint-parser": "^7.12.16",
-    "@vue/cli-plugin-babel": "^3.12.1",
     "@vue/cli-plugin-eslint": "^3.12.1",
     "@vue/cli-service": "~5.0.0",
     "crypto-browserify": "^3.12.0",