GHA: Use recent Ubuntu in test_matlab.yml

[dweindl]

Ubuntu 20.04 is no longer supported.

[dweindl]

24.04:

  {Invalid MEX-file
  '/home/runner/work/AMICI/AMICI/models/model_calvetti/ami_model_calvetti.mexa64':
  /opt/hostedtoolcache/MATLAB/2024.2.999/x64/bin/glnxa64/../../sys/os/glnxa64/libstdc++.so.6:
  version `GLIBCXX_3.4.32' not found (required by
  /home/runner/work/AMICI/AMICI/models/model_calvetti/ami_model_calvetti.mexa64)
  
  Error in simulate_model_calvetti (line 222)
  sol = ami_model_calvetti(tout,theta(1:0),kappa(1:6),options_ami,plist,xscale,init,data);
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  Error in testModels/getResults (line 83)
          sol = feval(['simulate_' modelname],t,theta,kappa,ami_data,ami_options);
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  Error in testModels (line 57)
              sol = getResults(modelname,options,data,t,theta,kappa);
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  Error in command_41126276_c19a_449d_93a5_9c568aff00e6 (line 1)
  cd(getenv('MW_ORIG_WORKING_FOLDER'));cd matlab; installAMICI; addpath tests; testModels
                                                                               ^^^^^^^^^^
  }

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.16%. Comparing base (4764b67) to head (812dec2).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #2653   +/-   ##
========================================
  Coverage    77.16%   77.16%           
========================================
  Files          332      332           
  Lines        23142    23142           
  Branches      1480     1480           
========================================
  Hits         17857    17857           
  Misses        5274     5274           
  Partials        11       11           

Flag	Coverage Δ
cpp	74.09% <ø> (ø)
cpp_python	33.38% <ø> (ø)
petab	39.40% <ø> (ø)
python	72.21% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.