Bump tough-cookie and botbuilder

Removes [tough-cookie](https://github.com/salesforce/tough-cookie). It's no longer used after updating ancestor dependency [botbuilder](https://github.com/Microsoft/botbuilder-js). These dependencies need to be updated together.


Removes `tough-cookie`

Updates `botbuilder` from 4.13.5 to 4.20.0
- [Release notes](https://github.com/Microsoft/botbuilder-js/releases)
- [Commits](https://github.com/Microsoft/botbuilder-js/compare/4.13.5...4.20.0)

---
updated-dependencies:
- dependency-name: tough-cookie
  dependency-type: indirect
- dependency-name: botbuilder
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

online-event-resources/emerging-tech/Bots/Bots101/package.json

@@ -1,6 +1,6 @@
 {
     "dependencies": {
-        "botbuilder": "^4.13.5",
+        "botbuilder": "^4.20.0",
         "dotenv": "^8.2.0",
         "restify": "^8.5.1"
     },