chore: bump chains from v0.29.1 to v0.29.2

[tekton-robot]

Component Version Updates

This PR updates the following component versions:

chains

• Previous version: v0.29.1
• New version: v0.29.2
• Repository: tektoncd/chains
• Release notes: v0.29.1...v0.29.2

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This PR was automatically created by the bump-payload workflow.

[tekton-robot]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 26.33%. Comparing base (3901432) to head (8ea4758).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3959   +/-   ##
=======================================
  Coverage   26.33%   26.33%           
=======================================
  Files         465      465           
  Lines       24951    24951           
=======================================
  Hits         6572     6572           
  Misses      17661    17661           
  Partials      718      718           

Flag	Coverage Δ
unit-tests	26.33% <ø> (ø)

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