Bump formidable and smee-client (#59)

Removes [formidable](https://github.com/node-formidable/formidable). It's no longer used after updating ancestor dependency [smee-client](https://github.com/probot/smee-client). These dependencies need to be updated together.


Removes `formidable`

Updates `smee-client` from 1.2.3 to 2.0.1
- [Release notes](https://github.com/probot/smee-client/releases)
- [Commits](probot/smee-client@v1.2.3...v2.0.1)

---
updated-dependencies:
- dependency-name: formidable
  dependency-type: indirect
- dependency-name: smee-client
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -27,7 +27,7 @@
     "jest": "^29.3.1",
     "nock": "^10.0.0",
     "nodemon": "^2.0.20",
-    "smee-client": "^1.2.3",
+    "smee-client": "^2.0.1",
     "standard": "^12.0.1"
   },
   "engines": {