[Task]: Migrate Python SDK away from the google-apitools library

### What needs to happen?

The [google-apitools](https://github.com/google/apitools) library is deprecated and no longer receiving regular updates, which can cause issues when upgrading Python versions supported by Beam. This library is largely used by GCP IOs, and migrating usage to each service's client library would get beam onto the recommended path for these services.

### Issue Priority

Priority: 2 (default / most normal work should be filed as P2)

### Issue Components

- [x] Component: Python SDK
- [ ] Component: Java SDK
- [ ] Component: Go SDK
- [ ] Component: Typescript SDK
- [x] Component: IO connector
- [ ] Component: Beam YAML
- [ ] Component: Beam examples
- [ ] Component: Beam playground
- [ ] Component: Beam katas
- [ ] Component: Website
- [ ] Component: Infrastructure
- [ ] Component: Spark Runner
- [ ] Component: Flink Runner
- [ ] Component: Samza Runner
- [ ] Component: Twister2 Runner
- [ ] Component: Hazelcast Jet Runner
- [ ] Component: Google Cloud Dataflow Runner