Bump eventsource from 1.0.7 to 2.0.2 in /docs

Bumps [eventsource](https://github.com/EventSource/eventsource) from 1.0.7 to 2.0.2.
- [Release notes](https://github.com/EventSource/eventsource/releases)
- [Changelog](https://github.com/EventSource/eventsource/blob/master/HISTORY.md)
- [Commits](https://github.com/EventSource/eventsource/compare/v1.0.7...v2.0.2)

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

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

docs/package.json

@@ -213,7 +213,7 @@
     "etag": "^1.8.1",
     "eventemitter3": "^4.0.4",
     "events": "^3.2.0",
-    "eventsource": "^1.0.7",
+    "eventsource": "^2.0.2",
     "evp_bytestokey": "^1.0.3",
     "execa": "^4.0.3",
     "expand-brackets": "^4.0.0",

docs/yarn.lock

@@ -3930,6 +3930,11 @@ eventsource@^1.0.7:
   dependencies:
     original "^1.0.0"
 
+eventsource@^2.0.2:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/eventsource/-/eventsource-2.0.2.tgz#76dfcc02930fb2ff339520b6d290da573a9e8508"
+  integrity sha512-IzUmBGPR3+oUG9dUeXynyNmf91/3zUSJg1lCktzKw47OXuhco54U3r9B7O4XX+Rb1Itm9OZ2b0RkTs10bICOxA==
+
 evp_bytestokey@^1.0.0, evp_bytestokey@^1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/evp_bytestokey/-/evp_bytestokey-1.0.3.tgz#7fcbdb198dc71959432efe13842684e0525acb02"