[FIX] #677 - Fix exception with Granulary and Binance exchange

Description

Replace String granularity ("15m", "1h", "6h") with Object Granularity for Binance exchange

Fixes #677

Please make your selection.

[X] 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)
[ ] This change requires a documentation update
[ ] This change requires a new dependency
[ ] Code Maintainability / comments
[ ] Code Refactoring / future-proofing

No test

[X] My code follows the style guidelines of this project
[X] I have performed a self-review of my own code
[X] I have commented my code, particularly in hard-to-understand areas
[] I have made corresponding changes to the documentation
[X] My changes generate no new warnings
[ ] I have added pytest unit tests that prove my fix is effective or that my feature works
[ ] New and existing unit tests pass locally with my changes
[ ] Any dependent changes have been merged and published in downstream modules
[X] I have checked my code and corrected any misspellings