Switch CI/CD workflows to use pypi for dependencies following openapi-common and bomanalytics-openapi release

[Andy-Grigg]

Once all dependencies are released and in pypi we can simplify the build steps:

• Remove the steps to download the whl files from the other repositories
• Remove the --find-links flag in the pip install command
• Remove the github repo client secret

These items need to be resolved for:

• openapi-common
• grantami-bomanalytics-openapi

[Andy-Grigg]

Once this is done, we should confirm that the transitive dependencies in openapi-common appear in the dependency graph of this repo.