chore(Echo): Bump miniflare from 4.20250705.0 to 4.20250709.0

This commit updates the `miniflare` dev dependency in the `Echo` task scheduler repository to align with the latest upstream release. This follows recent updates to related dependencies (`@cloudflare/workers-types` and `wrangler`) across the Land ecosystem, ensuring consistency in the toolchain used for testing distributed task execution scenarios via Cloudflare Workers integration.

While `Echo` primarily handles internal task scheduling through its work-stealing queue architecture, this update maintains compatibility with modern Cloudflare Workers APIs and TypeScript definitions used during development. The change is part of routine maintenance to keep the Land monorepo's testing infrastructure aligned with upstream tooling, with no breaking changes expected as the new version preserves backward compatibility.

Author: NikolaRHristov

package.json

@@ -31,7 +31,7 @@
 		"@cloudflare/workers-types": "4.20250710.0",
 		"@playform/build": "0.2.5",
 		"@types/dotenv": "8.2.3",
-		"miniflare": "4.20250705.0",
+		"miniflare": "4.20250709.0",
 		"wrangler": "4.24.0"
 	},
 	"publishConfig": {