feat: upgrade vitest from 0.34.6 to 2.0.5

Snyk has created this PR to upgrade vitest from 0.34.6 to 2.0.5.

See this package in npm:
vitest

See this project in Snyk:
https://app.snyk.io/org/leonardoadame/project/036ffa3a-9ded-495c-9c07-306c9e3572be?utm_source=github&utm_medium=referral&page=upgrade-pr

Author: snyk-bot

packages/adapter-vercel/package.json

@@ -38,7 +38,7 @@
 		"@sveltejs/kit": "workspace:^",
 		"@types/node": "^16.18.6",
 		"typescript": "^4.9.4",
-		"vitest": "^0.34.6"
+		"vitest": "^2.0.5"
 	},
 	"peerDependencies": {
 		"@sveltejs/kit": "^1.5.0"