fix(deps): update dependency vidstack to v1.12.3

Author: renovate[bot]

package.json

@@ -34,7 +34,7 @@
     "plyr": "3.7.8",
     "reveal.js": "5.1.0",
     "three": "0.164.1",
-    "vidstack": "1.11.21",
+    "vidstack": "1.12.3",
     "vue": "3.4.27",
     "vuepress": "2.0.0-rc.9",
     "vuepress-plugin-search-pro": "2.0.0-rc.38",