Add branch 1.3 as a protected branch

[git-hulk]

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[Copilot]

Pull request overview

This PR adds branch '1.3' to the list of protected branches in the Apache Software Foundation configuration file, continuing the versioning pattern for the Kvrocks Controller project.

• Adds '1.3' as a protected branch with default settings (empty configuration block)

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 49.06%. Comparing base (6c56470) to head (010b855).
⚠️ Report is 103 commits behind head on unstable.

Additional details and impacted files

@@             Coverage Diff              @@
##           unstable     #371      +/-   ##
============================================
+ Coverage     43.38%   49.06%   +5.67%     
============================================
  Files            37       45       +8     
  Lines          2971     3783     +812     
============================================
+ Hits           1289     1856     +567     
- Misses         1544     1719     +175     
- Partials        138      208      +70     

Flag	Coverage Δ
unittests	49.06% <ø> (+5.67%)	⬆️

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