fix: upgrade vitest from 0.31.4 to 0.34.6 (#72)

Snyk has created this PR to upgrade vitest from 0.31.4 to 0.34.6.

See this package in npm:
https://www.npmjs.com/package/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

Co-authored-by: snyk-bot <snyk-bot@snyk.io>

packages/adapter-vercel/package.json

@@ -38,7 +38,7 @@
 		"@sveltejs/kit": "workspace:^",
 		"@types/node": "^16.18.6",
 		"typescript": "^4.9.4",
-		"vitest": "^0.31.0"
+		"vitest": "^0.34.6"
 	},
 	"peerDependencies": {
 		"@sveltejs/kit": "^1.5.0"