Bump pac-resolver and aws-cdk

Removes [pac-resolver](https://github.com/TooTallNate/proxy-agents/tree/HEAD/packages/pac-resolver). It's no longer used after updating ancestor dependency [aws-cdk](https://github.com/aws/aws-cdk/tree/HEAD/packages/aws-cdk). These dependencies need to be updated together.


Removes `pac-resolver`

Updates `aws-cdk` from 1.100.0 to 1.203.0
- [Release notes](https://github.com/aws/aws-cdk/releases)
- [Changelog](https://github.com/aws/aws-cdk/blob/main/CHANGELOG.v2.md)
- [Commits](https://github.com/aws/aws-cdk/commits/v1.203.0/packages/aws-cdk)

---
updated-dependencies:
- dependency-name: pac-resolver
  dependency-type: indirect
- dependency-name: aws-cdk
  dependency-type: direct:development
...

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