Bump moment from 2.29.1 to 2.29.4

---
updated-dependencies:
- dependency-name: moment
  dependency-version: 2.29.4
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package.json

@@ -13,7 +13,7 @@
     "docs:build": "vuepress build docs"
   },
   "devDependencies": {
-    "moment": "2.29.1",
+    "moment": "2.29.4",
     "moment-timezone": "0.5.31",
     "vue-google-adsense": "1.10.1",
     "vue-script2": "2.1.0",