chore(deps): update vitest monorepo to v4

Author: renovate[bot]

package.json

@@ -16,7 +16,7 @@
 	"types": "dist/logger.d.ts",
 	"description": "A simple logging library",
 	"devDependencies": {
-		"@vitest/coverage-v8": "^2.0.5",
+		"@vitest/coverage-v8": "^4.0.0",
 		"nodemon": "^3.1.4",
 		"prettier": "3.6.2",
 		"tsx": "^4.19.0",