Add cd configuration for debian-13 server package ECFLOW-2082

[iainrussell]

Description

Contributor Declaration

By opening this pull request, I affirm the following:

• All authors agree to the Contributor License Agreement.
• The code follows the project's coding standards.
• I have performed self-review and added comments where needed.
• I have added or updated tests to verify that my changes are effective and functional.
• I have run all existing tests and confirmed they pass.

🌦️ >> Documentation << 🌦️
https://sites.ecmwf.int/docs/dev-section/ecflow/pull-requests/PR-331

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 50.54%. Comparing base (b1b6bfd) to head (f49b8aa).
⚠️ Report is 17 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #331      +/-   ##
===========================================
+ Coverage    50.32%   50.54%   +0.22%     
===========================================
  Files         1238     1239       +1     
  Lines        98257    98583     +326     
  Branches     14975    14960      -15     
===========================================
+ Hits         49445    49828     +383     
+ Misses       48812    48755      -57     

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