(A001) Simplify workflow for unittests

[syntron]

simplify main test workflow - do not run test_FMIRegression

• these are test for OpenModelica / no specific check for OMPython
• they are run via a cron job
• it increases the runtime of the unittest job

furthermore add a test workflow which runs only the latest version (unittests in ./tests) - needed later if data for v400 is defined

see PR #404

[adeas31]

simplify main test workflow - do not run test_FMIRegression

• these are test for OpenModelica / no specific check for OMPython
• they are run via a cron job
• it increases the runtime of the unittest job

I agree these are more OpenModelica tests. I suggest we remove this test and its workflow completely. OMPython has no benefit having it.

furthermore add a test workflow which runs only the latest version (unittests in ./tests) -

Why is this workflow needed? Perhaps

needed later if data for v400 is defined

Better to add it when its required. Here its inclusion is not clear.

[syntron]

I agree these are more OpenModelica tests. I suggest we remove this test and its workflow completely. OMPython has no benefit having it.

OK; remove it completly (also the definiton using a cron job) or just deactivate the automated run such that it can be executed if needed?

Better to add it when its required. Here its inclusion is not clear.

OK; will remove it here. The idea was to be able to run both options v4xx and v400 separatly ...