Update dependency browserslist to v4.21.6

Author: renovate[bot]

package.json

@@ -136,7 +136,7 @@
     "@vue/eslint-config-prettier": "6.0.0",
     "@vue/eslint-config-typescript": "7.0.0",
     "babel-eslint": "10.1.0",
-    "browserslist": "4.16.5",
+    "browserslist": "4.21.6",
     "cross-env": "7.0.3",
     "deepmerge": "4.2.2",
     "electron": "9.4.4",