Use SHA-256 for checksums

[martincostello]

Fix BA2004 warning from Binskim.

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (b56c058) 97.47% compared to head (4b29887) 97.47%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #914   +/-   ##
=======================================
  Coverage   97.47%   97.47%           
=======================================
  Files          24       24           
  Lines         554      554           
=======================================
  Hits          540      540           
  Misses         14       14           

Flag	Coverage Δ
linux	97.47% <ø> (ø)
macos	97.47% <ø> (ø)
windows	97.47% <ø> (ø)

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