chore(deps): update devdependency @types/eventsource to v3 (#134)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -90,7 +90,7 @@
     "@cloudflare/workers-types": "^4.20250204.0",
     "@types/bun": "^1.2.2",
     "@types/deno": "^2.0.0",
-    "@types/eventsource": "^1.1.15",
+    "@types/eventsource": "^3.0.0",
     "@types/node": "^22.13.1",
     "@types/web": "^0.0.202",
     "@types/ws": "^8.5.14",