Bump axios and @slack/web-api (#83)

Bumps [axios](https://github.com/axios/axios) to 1.6.1 and updates ancestor dependency [@slack/web-api](https://github.com/slackapi/node-slack-sdk). These dependencies need to be updated together.


Updates `axios` from 0.27.2 to 1.6.1
- [Release notes](https://github.com/axios/axios/releases)
- [Changelog](https://github.com/axios/axios/blob/v1.x/CHANGELOG.md)
- [Commits](axios/axios@v0.27.2...v1.6.1)

Updates `@slack/web-api` from 6.9.0 to 6.9.1
- [Release notes](https://github.com/slackapi/node-slack-sdk/releases)
- [Commits](https://github.com/slackapi/node-slack-sdk/compare/@slack/[email protected]...@slack/[email protected])

---
updated-dependencies:
- dependency-name: axios
  dependency-type: indirect
- dependency-name: "@slack/web-api"
  dependency-type: direct:production
...

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

package.json

@@ -10,7 +10,7 @@
   },
   "dependencies": {
     "@probot/adapter-aws-lambda-serverless": "^3.0.4",
-    "@slack/web-api": "^6.9.0",
+    "@slack/web-api": "^6.9.1",
     "probot": "^12.3.1"
   },
   "repository": "github:emergency-pull-request-probot-app",