feat: include spaces in file-name

[cap-ang]

List of Changes

• Update file-name regex validation

Motivation and Context

• My change is required to include spaces in file-name

How Has This Been Tested?

DEV environment with a concatenation of white-space, character, number, underscore and dash like
__ test01 --.csv

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.