chore(deps): update dependency vite-plugin-istanbul to v6

Author: renovate[bot]

package.json

@@ -66,7 +66,7 @@
     "substyle-glamor": "4.1.2",
     "typescript": "5.4.5",
     "vite": "3.2.10",
-    "vite-plugin-istanbul": "5.0.0",
+    "vite-plugin-istanbul": "6.0.2",
     "vitest": "^1.6.0"
   },
   "peerDependencies": {