vdk-core: Error when running built-in version plugin

[ivakoleva]

Describe the bug HTTP 404 response when running new_version_check_plugin.py check_version() for package name vdk-core and package index pipy.org

Steps To Reproduce Steps to reproduce the behavior:

1. Run any vdk-core test in debug
2. Set breakpoint to https://github.com/vmware/versatile-data-kit/blob/main/projects/vdk-core/src/vdk/internal/builtin_plugins/version/new_version_check_plugin.py#L65
3. Evaluate new_package(package_index, package_name).check()

Expected behavior check() should result in boolean, so no exception is raised, and workflow for printing new version message is not interrupted

Screenshots

Version (please complete the following information):

• OS: Mac OS X
• Version: latest vdk-core

Additional context