Bump @slack/oauth from 2.6.2 to 3.0.0

Bumps [@slack/oauth](https://github.com/slackapi/node-slack-sdk) from 2.6.2 to 3.0.0.
- [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: "@slack/oauth"
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

package.json

@@ -41,7 +41,7 @@
   },
   "dependencies": {
     "@slack/logger": "^4.0.0",
-    "@slack/oauth": "^2.6.2",
+    "@slack/oauth": "^3.0.0",
     "@slack/socket-mode": "^1.3.3",
     "@slack/types": "^2.11.0",
     "@slack/web-api": "^6.11.2",