chore(deps): update actions/checkout action to v6.0.3

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	patch	v6.0.2 → v6.0.3

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Release Notes

actions/checkout (actions/checkout)

v6.0.3

Compare Source

• Fix checkout init for SHA-256 repositories by @​yaananth in #​2439
• fix: expand merge commit SHA regex and add SHA-256 test cases by @​yaananth in #​2414

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 33.17%. Comparing base (657f82a) to head (39d6c59).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2111   +/-   ##
=======================================
  Coverage   33.17%   33.17%           
=======================================
  Files          78       78           
  Lines        7433     7433           
=======================================
  Hits         2466     2466           
  Misses       4763     4763           
  Partials      204      204           

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