Refined release workflow

[srprash]

The workflow will be tested soon and modifications will be made if required from the test.

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[thpierce]

Can we do any kind of test of this? Even just commenting out public update steps and running that?

[srprash]

Can we do any kind of test of this? Even just commenting out public update steps and running that?

Yea. I think we can do the following:

1. Merge the PR with steps to publish to prod PyPI and ECR repos commented out
2. Run the workflow with input version as 0.0.0 to ensure we are able to build, authenticate, and push to testPyPI successfully.
3. Uncomment the steps in a follow-up PR. And then run the workflow for v 0.0.1 release.

[srprash]

Ok. So as discussed, I commented the prod publishing steps and tested the workflow: https://github.com/aws-observability/aws-otel-python-instrumentation/actions/runs/8177260016
The wheel was published to TestPyPI: https://test.pypi.org/project/aws-opentelemetry-distro/0.0.0/

I will revert the test changes and make the PR ready for review.