fix(deps): update dependency rxjs to ^6.5.3

Author: renovate-bot

package.json

@@ -76,7 +76,7 @@
   "dependencies": {
     "@sourcegraph/vscode-ws-jsonrpc": "^0.0.3-fork",
     "lodash": "^4.17.15",
-    "rxjs": "^6.4.0",
+    "rxjs": "^6.5.3",
     "sourcegraph": "^23.0.1",
     "type-zoo": "^3.2.1",
     "uuid": "^3.3.2",

yarn.lock

@@ -4885,10 +4885,10 @@ rxjs-tslint-rules@^4.23.0:
     tsutils "^3.0.0"
     tsutils-etc "^1.1.0"
 
-rxjs@^6.4.0, rxjs@^6.5.1:
-  version "6.5.1"
-  resolved "https://registry.npmjs.org/rxjs/-/rxjs-6.5.1.tgz#f7a005a9386361921b8524f38f54cbf80e5d08f4"
-  integrity sha512-y0j31WJc83wPu31vS1VlAFW5JGrnGC+j+TtGAa1fRQphy48+fDYiDmX8tjGloToEsMkxnouOg/1IzXGKkJnZMg==
+rxjs@^6.5.1, rxjs@^6.5.3:
+  version "6.5.3"
+  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-6.5.3.tgz#510e26317f4db91a7eb1de77d9dd9ba0a4899a3a"
+  integrity sha512-wuYsAYYFdWTAnAaPoKGNhfpWwKZbJW+HgAJ+mImp+Epl7BG8oNWBCTyRM8gba9k4lk8BgWdoYm21Mo/RYhhbgA==
   dependencies:
     tslib "^1.9.0"