chore: update test

package.json

@@ -45,7 +45,7 @@
   },
   "homepage": "https://github.com/mengxiong10/vue2-datepicker#readme",
   "peerDependencies": {
-    "vue": "^2.5.0"
+    "vue": "^2.7.14"
   },
   "dependencies": {
     "date-format-parse": "^0.2.7"
@@ -95,7 +95,7 @@
     "rollup-plugin-terser": "^5.1.2",
     "rollup-plugin-vue": "^5.1.6",
     "sass": "^1.22.10",
-    "vue": "^2.6.10",
+    "vue": "^2.7.14",
     "vue-hot-reload-api": "^2.3.3",
     "vue-jest": "^3.0.5",
     "vue-template-compiler": "^2.6.10"