Update dependency @types/eventsource to v3

Author: renovate[bot]

package-lock.json

@@ -10,7 +10,7 @@
     "@cucumber/microdata": "2.2.0",
     "@testing-library/dom": "10.4.0",
     "@testing-library/user-event": "13.5.0",
-    "@types/eventsource": "1.1.15",
+    "@types/eventsource": "3.0.0",
     "@types/express": "5.0.1",
     "@types/mocha": "10.0.10",
     "@types/node": "22.15.21",