Bump eventsource from 1.0.7 to 1.1.1 in /etc/browser-dist-example

Bumps [eventsource](https://github.com/EventSource/eventsource) from 1.0.7 to 1.1.1.
- [Release notes](https://github.com/EventSource/eventsource/releases)
- [Changelog](https://github.com/EventSource/eventsource/blob/master/HISTORY.md)
- [Commits](EventSource/eventsource@v1.0.7...v1.1.1)

---
updated-dependencies:
- dependency-name: eventsource
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

etc/browser-dist-example/package-lock.json

@@ -7,7 +7,7 @@
     "start": "node index.js"
   },
   "dependencies": {
-    "eventsource": "^1.0.7",
+    "eventsource": "^1.1.1",
     "reconnecting-eventsource": "file:../../"
   },
   "author": "",