chore(deps): bump eventsource and sockjs-client (#57)

Bumps [eventsource](https://github.com/EventSource/eventsource) to 2.0.2 and updates ancestor dependency [sockjs-client](https://github.com/sockjs/sockjs-client). These dependencies need to be updated together.


Updates `eventsource` from 0.1.6 to 2.0.2
- [Release notes](https://github.com/EventSource/eventsource/releases)
- [Changelog](https://github.com/EventSource/eventsource/blob/master/HISTORY.md)
- [Commits](EventSource/eventsource@v0.1.6...v2.0.2)

Updates `sockjs-client` from 1.1.4 to 1.6.1
- [Release notes](https://github.com/sockjs/sockjs-client/releases)
- [Changelog](https://github.com/sockjs/sockjs-client/blob/main/Changelog.md)
- [Commits](sockjs/sockjs-client@v1.1.4...v1.6.1)

---
updated-dependencies:
- dependency-name: eventsource
  dependency-type: indirect
- dependency-name: sockjs-client
  dependency-type: direct:production
...

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package-lock.json

@@ -86,7 +86,7 @@
     "redux-thunk": "^2.2.0",
     "select2": "^4.0.6-rc.1",
     "slideout": "^1.0.1",
-    "sockjs-client": "^1.1.4",
+    "sockjs-client": "^1.6.1",
     "sticky-kit": "^1.1.3",
     "tether": "^1.4.4",
     "tether-drop": "^1.4.2",