Improve RC workflow: Enhanced validation and error handling in Makefile

[borland667]

What?

• Improved the bump-test-version target in the Makefile to ensure proper validation of the provided release candidate (RC) versions.
• Added logic to fetch the latest version and the latest RC version from PyPI.
• Implemented checks to validate that the provided RC version is either starting from rc0 if no RC versions exist or incrementing the latest RC version from PyPI.
• Enhanced error handling and messaging to provide clearer feedback during the version bump process.

Why?

• To ensure that version increments are consistent and follow the existing versioning scheme on PyPI.
• To prevent invalid RC versions from being set, which could lead to confusion and potential issues during the release process.
• To automate the version bump process with proper validation, reducing manual errors and improving the release workflow.
• To provide clear and informative messages to developers when using the Makefile, improving the overall development experience.

References

• Refer to the Makefile best practices for additional context on the changes made.

Before release

Review the checklist here