dbt throws error if we have duplicate names

[Ishankoradia]

Because of current logic we had sheet1 and _airbyte_name_sheet1 having same names i.e. sheet1 in sources.yml. For this, dbt threw error.
Looks like name should also be unique like identifier in sources.yml

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (f1239b1) 78.83% compared to head (dd1e5f9) 78.83%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #63   +/-   ##
=======================================
  Coverage   78.83%   78.83%           
=======================================
  Files          21       21           
  Lines         808      808           
=======================================
  Hits          637      637           
  Misses        171      171           

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[Ishankoradia]

@fatchat ready to be merged, have fixed the test cases