Bump smee-client from 1.1.0 to 2.0.4

Bumps [smee-client](https://github.com/probot/smee-client) from 1.1.0 to 2.0.4.
- [Release notes](https://github.com/probot/smee-client/releases)
- [Commits](probot/smee-client@v1.1.0...v2.0.4)

---
updated-dependencies:
- dependency-name: smee-client
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

package-lock.json

@@ -26,7 +26,7 @@
     "jest": "^24.7.1",
     "nock": "^10.0.6",
     "nodemon": "^1.18.11",
-    "smee-client": "^1.1.0",
+    "smee-client": "^2.0.4",
     "standard": "^12.0.1"
   },
   "engines": {