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

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	major	v5 -> v6
actions/checkout	action	major	v5.0.1 -> v6.0.1

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Release Notes

actions/checkout (actions/checkout)

v6

Compare Source

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Configuration

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[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +0.00% (target: -1.00%)	✅ ∅ (target: 97.00%)

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (cd5f252)	717	693	96.65%
Head commit (4d5114b)	717 (+0)	693 (+0)	96.65% (+0.00%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#804)	0	0	∅ (not applicable)

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.24%. Comparing base (9aacc5d) to head (6aa9dc5).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #804   +/-   ##
=========================================
  Coverage     97.24%   97.24%           
  Complexity      328      328           
=========================================
  Files            55       55           
  Lines           870      870           
=========================================
  Hits            846      846           
  Misses           24       24           

Flag	Coverage Δ
unittests	97.24% <ø> (ø)

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