Add cd configuration for debian-13 server package

[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 49.97%. Comparing base (dd96e47) to head (7ab8ab0).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #331   +/-   ##
========================================
  Coverage    49.96%   49.97%           
========================================
  Files         1238     1238           
  Lines        98169    98169           
  Branches     14950    14950           
========================================
+ Hits         49049    49058    +9     
+ Misses       49120    49111    -9     

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