Python Dependabot::SharedHelpers::HelperSubprocessFailed issues fixes

[sachin-sandhu]

What are you trying to accomplish?

Preface: Issue related with Dependabot::SharedHelpers::HelperSubprocessFailed

Issues:

1. Python version mentioned in .toml file is not compatible with dependency
2. Package version mentioned in .toml file is not found in python package index
3. Error 401 while accessing private package index

Fix:

Adds exception handlers to appropriate error messages and show useful message to user

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Checklist

• I have run the complete test suite to ensure all tests and linters pass.
• I have thoroughly tested my code changes to ensure they work as expected, including adding additional tests for new functionality.
• I have written clear and descriptive commit messages.
• I have provided a detailed description of the changes in the pull request, including the problem it addresses, how it fixes the problem, and any relevant details about the implementation.
• I have ensured that the code is well-documented and easy to understand.