[Backport 1.3] Add backport workflow to 1.x

[prudhvigodithi]

Backport a10f2ec from #13800.

[github-actions]

✅ Gradle check result for 8ae3093: SUCCESS

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.62%. Comparing base (05f4aac) to head (8ae3093).
Report is 7 commits behind head on 1.3.

Additional details and impacted files

@@             Coverage Diff              @@
##                1.3   #13824      +/-   ##
============================================
+ Coverage     77.56%   77.62%   +0.05%     
- Complexity    58760    58798      +38     
============================================
  Files          4223     4223              
  Lines        253441   253442       +1     
  Branches      38701    38701              
============================================
+ Hits         196590   196728     +138     
+ Misses        40844    40730     -114     
+ Partials      16007    15984      -23     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.