fix(vue): support optional chaining (#564)

Author: dhayab

src/templates/Vue InstantSearch 2/package.json

@@ -10,23 +10,24 @@
   },
   "dependencies": {
     "algoliasearch": "4",
-    "core-js": "2.6.9",
-    "vue": "2.6.10",
+    "core-js": "3.6.5",
+    "vue": "2.6.11",
     "vue-instantsearch": "{{libraryVersion}}"
   },
   "devDependencies": {
-    "@vue/cli-plugin-babel": "3.6.0",
-    "@vue/cli-plugin-eslint": "3.6.0",
-    "@vue/cli-service": "3.6.0",
-    "babel-eslint": "10.0.2",
-    "eslint": "5.16.0",
-    "eslint-config-algolia": "13.2.3",
-    "eslint-config-prettier": "4.1.0",
-    "eslint-plugin-import": "2.19.1",
-    "eslint-plugin-prettier": "3.1.2",
-    "eslint-plugin-vue": "5.2.2",
-    "prettier": "1.19.1",
-    "vue-template-compiler": "2.6.10"
+    "@babel/eslint-parser": "7.17.0",
+    "@vue/cli-plugin-babel": "4.5.15",
+    "@vue/cli-plugin-eslint": "4.5.15",
+    "@vue/cli-service": "4.5.15",
+    "@vue/eslint-config-prettier": "6.0.0",
+    "babel-eslint": "10.1.0",
+    "eslint": "6.7.2",
+    "eslint-config-algolia": "20.0.0",
+    "eslint-plugin-import": "2.25.4",
+    "eslint-plugin-prettier": "3.3.1",
+    "eslint-plugin-vue": "6.2.2",
+    "prettier": "2.2.1",
+    "vue-template-compiler": "2.6.11"
   },
   "browserslist": [
     "> 1%",

src/templates/Vue InstantSearch/package.json

@@ -10,23 +10,24 @@
   },
   "dependencies": {
     "algoliasearch": "4",
-    "core-js": "2.6.9",
-    "vue": "2.6.10",
+    "core-js": "3.6.5",
+    "vue": "2.6.11",
     "vue-instantsearch": "{{libraryVersion}}"
   },
   "devDependencies": {
-    "@vue/cli-plugin-babel": "3.6.0",
-    "@vue/cli-plugin-eslint": "3.6.0",
-    "@vue/cli-service": "3.6.0",
-    "babel-eslint": "10.0.2",
-    "eslint": "5.16.0",
-    "eslint-config-algolia": "13.2.3",
-    "eslint-config-prettier": "4.1.0",
-    "eslint-plugin-import": "2.19.1",
-    "eslint-plugin-prettier": "3.1.2",
-    "eslint-plugin-vue": "5.2.2",
-    "prettier": "1.19.1",
-    "vue-template-compiler": "2.6.10"
+    "@babel/eslint-parser": "7.17.0",
+    "@vue/cli-plugin-babel": "4.5.15",
+    "@vue/cli-plugin-eslint": "4.5.15",
+    "@vue/cli-service": "4.5.15",
+    "@vue/eslint-config-prettier": "6.0.0",
+    "babel-eslint": "10.1.0",
+    "eslint": "6.7.2",
+    "eslint-config-algolia": "20.0.0",
+    "eslint-plugin-import": "2.25.4",
+    "eslint-plugin-prettier": "3.3.1",
+    "eslint-plugin-vue": "6.2.2",
+    "prettier": "2.2.1",
+    "vue-template-compiler": "2.6.11"
   },
   "browserslist": [
     "> 1%",