Fix: lowercase DAT ROM checksums

[emmercm]

Fixes: #1144

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.26%. Comparing base (ffa8559) to head (d6f44f4).

Additional details and impacted files

@@           Coverage Diff            @@
##             main    #1146    +/-   ##
========================================
  Coverage   93.25%   93.26%            
========================================
  Files         102      102            
  Lines        6347     6351     +4     
  Branches     1406     1513   +107     
========================================
+ Hits         5919     5923     +4     
+ Misses        427      406    -21     
- Partials        1       22    +21     

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[github-actions]

🧪 Branch testing instructions

This pull request can be tested locally with the following command:

npm exec --yes -- "github:emmercm/igir#emmercm/lowercase-rom-checksums" [commands..] [options]

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[github-actions]

🔒 Inactive pull request lock

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.

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