Bump eventsource from 1.0.7 to 1.1.1 in /mindmeld-ui

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: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

mindmeld-ui/yarn.lock

@@ -3264,8 +3264,8 @@ events@^3.0.0:
   resolved "https://registry.yarnpkg.com/events/-/events-3.0.0.tgz#9a0a0dfaf62893d92b875b8f2698ca4114973e88"
 
 eventsource@^1.0.7:
-  version "1.0.7"
-  resolved "https://registry.yarnpkg.com/eventsource/-/eventsource-1.0.7.tgz#8fbc72c93fcd34088090bc0a4e64f4b5cee6d8d0"
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/eventsource/-/eventsource-1.1.1.tgz#4544a35a57d7120fba4fa4c86cb4023b2c09df2f"
   dependencies:
     original "^1.0.0"