chore(deps): update vitest monorepo to v4

Author: renovate[bot]

package.json

@@ -65,7 +65,7 @@
 		"@types/node": "^24.10.1",
 		"@typescript-eslint/eslint-plugin": "^7.18.0",
 		"@typescript-eslint/parser": "^7.18.0",
-		"@vitest/coverage-v8": "^3.2.4",
+		"@vitest/coverage-v8": "^4.1.8",
 		"cz-conventional-changelog": "^3.3.0",
 		"discord.js": "^14.24.2",
 		"eslint": "^8.57.1",