Update GitHub Actions: Optional GITHUB SECRETS for Regression Tests

[cockroacher]

Summary:
This PR modifies our GitHub Actions workflow for regression tests to make the use of GITHUB SECRETS optional. While still highly recommended for storing URLs to licensed resources like the IP2Location database, this change ensures that the workflow can run without them.

Details:

• Updated the workflow configuration to handle the absence of GITHUB SECRETS.
• Added fallback mechanisms to ensure tests can still execute without access to licensed resources.

Benefits:

• Increases flexibility and ease of use for contributors.
• Ensures that regression tests can run in environments where GITHUB SECRETS are not available.
• Maintains security and best practices by recommending the use of GITHUB SECRETS.

Testing:

• Verified that the workflow runs successfully with and without GITHUB SECRETS.
• Ensured that appropriate warnings are logged when GITHUB SECRETS are not used.