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": "^4.1.2",
 		"cz-conventional-changelog": "^3.3.0",
 		"discord.js": "^14.24.2",
 		"eslint": "^8.57.1",
@@ -78,7 +78,7 @@
 		"typedoc-json-parser": "^10.2.0",
 		"typescript": "^5.8.3",
 		"vite": "^7.2.2",
-		"vitest": "^3.2.4"
+		"vitest": "^4.1.2"
 	},
 	"files": [
 		"lib",