Update dependency sourcegraph to v23

Author: renovate-bot

package.json

@@ -95,7 +95,7 @@
     "@sourcegraph/tsconfig": "^3.0.0",
     "@sourcegraph/tslint-config": "^12.3.1",
     "parcel-bundler": "^1.11.0",
-    "sourcegraph": "^22.0.0",
+    "sourcegraph": "^23.0.0",
     "tslint": "^5.11.0",
     "typescript": "^3.1.6"
   },

yarn.lock

@@ -4587,6 +4587,11 @@ sourcegraph@^22.0.0:
   resolved "https://registry.yarnpkg.com/sourcegraph/-/sourcegraph-22.0.0.tgz#b259929c31bf367f5160056698a881dc26eb36bd"
   integrity sha512-cJHby0OPCM0y0BmRTKhY89D02f9koROluHMJGQGNE8q9CoIVbe1s6ctHCytz7bjY9mKtCpQMbtxYQhfIm5S4lg==
 
+sourcegraph@^23.0.0:
+  version "23.0.0"
+  resolved "https://registry.yarnpkg.com/sourcegraph/-/sourcegraph-23.0.0.tgz#1fb96015af3e84cc9cc2944823f04a7e952ed565"
+  integrity sha512-hQALHrTt+AK5ZAqUAUNhxO7ClSv/xyTjMQPBb+hQykKJrMaHTk+CnJNHs7dRfXYKnbnZeisQRjaxKGX8UecU0Q==
+
 split-string@^3.0.1, split-string@^3.0.2:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/split-string/-/split-string-3.1.0.tgz#7cb09dda3a86585705c64b39a6466038682e8fe2"