Fix release notes generator to format previous date properly

[amontanez24]

fixes #442

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.11%. Comparing base (a168631) to head (fc517d2).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #453   +/-   ##
=======================================
  Coverage   90.11%   90.11%           
=======================================
  Files          29       29           
  Lines        1821     1821           
=======================================
  Hits         1641     1641           
  Misses        180      180           

Flag	Coverage Δ
integration	79.73% <ø> (ø)
unit	86.82% <ø> (ø)

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[amontanez24]

@R-Palazzo This might be an issue for the other repos as well