chore(deps): bump autoprefixer from 10.4.20 to ^10.4.21

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package-lock.json

@@ -109,7 +109,7 @@
     "@types/jest": "^29.5.14",
     "@vue/test-utils": "^1.3.6",
     "@vue/vue2-jest": "^29.2.6",
-    "autoprefixer": "^10.4.20",
+    "autoprefixer": "^10.4.21",
     "babel-jest": "^29.7.0",
     "babel-loader": "^9.2.1",
     "babel-loader-exclude-node-modules-except": "^1.2.1",