Regenerate dependabot.yml configuration

[tekton-robot]

Automated Dependabot Configuration Update

This PR regenerates .github/dependabot.yml from .github/dependabot.config.yml.

Changes

The dependabot configuration has been regenerated to ensure it's in sync with:

• Release branches listed in .github/dependabot.config.yml
• Ecosystem configurations

Review Checklist

• Verify that all active LTS release branches are included
• Check that main branch configurations look correct
• Ensure patch-only restrictions are applied to release branches

---

🤖 This PR was automatically created by the Regenerate Dependabot Configuration workflow.
Triggered by: schedule
Run: https://github.com/tektoncd/chains/actions/runs/31375492885

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 61.90%. Comparing base (0548d01) to head (5ddf65c).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1870   +/-   ##
=======================================
  Coverage   61.90%   61.90%           
=======================================
  Files          64       64           
  Lines        4071     4071           
=======================================
  Hits         2520     2520           
  Misses       1269     1269           
  Partials      282      282           

Flag	Coverage Δ
unit-tests	61.90% <ø> (ø)

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[vdemeester]

cc @tektoncd/chains-maintainers

[tekton-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: vdemeester

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• OWNERS [vdemeester]

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[anithapriyanatarajan]

/lgtm