Update dependency rxjs to ^6.5.3

Author: renovate-bot

package.json

@@ -157,7 +157,7 @@
     "@sourcegraph/lsp-client": "^2.0.0-beta.2",
     "@sourcegraph/vscode-ws-jsonrpc": "0.0.3-fork",
     "prettier": "^1.16.4",
-    "rxjs": "^6.3.3",
+    "rxjs": "^6.5.3",
     "sourcegraph-langserver-http": "https://github.com/sourcegraph/sourcegraph-langserver-http#0b0173feef37d1f4f68d881c95ac3f4c97bfedb3",
     "tagged-template-noop": "^2.1.0",
     "vscode-jsonrpc": "^4.0.0",

yarn.lock

@@ -4891,10 +4891,10 @@ rxjs-tslint-rules@^4.12.0:
     tslib "^1.8.0"
     tsutils "^3.0.0"
 
-rxjs@^6.3.3, rxjs@^6.4.0:
-  version "6.5.2"
-  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-6.5.2.tgz#2e35ce815cd46d84d02a209fb4e5921e051dbec7"
-  integrity sha512-HUb7j3kvb7p7eCUHE3FqjoDsC1xfZQ4AHFWfTKSpZ+sAhhz5X1WX0ZuUqWbzB2QhSLp3DoLUG+hMdEDKqWo2Zg==
+rxjs@^6.3.3, rxjs@^6.4.0, 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"