fix: upgrade esbuild from 0.19.12 to 0.21.1

Snyk has created this PR to upgrade esbuild from 0.19.12 to 0.21.1.

See this package in npm:
esbuild

See this project in Snyk:
https://app.snyk.io/org/leonardoadame/project/4b27a5e8-2236-4d2d-9fe4-a04e296133c3?utm_source=github&utm_medium=referral&page=upgrade-pr

packages/adapter-cloudflare-workers/package.json

@@ -32,7 +32,7 @@
 	"dependencies": {
 		"@cloudflare/workers-types": "^4.20230404.0",
 		"@iarna/toml": "^2.2.5",
-		"esbuild": "^0.19.9"
+		"esbuild": "^0.21.1"
 	},
 	"devDependencies": {
 		"@cloudflare/kv-asset-handler": "^0.3.0",