Coverage job fails

Summary

Coverage job fails reporting errors related to the DB read/writes and an AssirtionError in MACOBAC computations

Steps to reproduce

Trigger coverage test job

What is the expected correct behavior?

The tests must pass

Relevant logs and/or screenshots

=========================== short test summary info ============================
FAILED calibpipe/tests/unittests/atmosphere/test_molecular_atmosphere_calibrator.py::TestMolecularAtmosphereCalibrator::test_calculate_co2 - AssertionError: assert 420.00333333333333 == 419.3125
 +  where 420.00333333333333 = <Quantity 420.00333333 ppm>.value
 +    where <Quantity 420.00333333 ppm> = calibpipe.atmosphere.atmosphere_containers.MacobacContainer:\n             co2_concentration: 12 months average CO2 background concentration\n                                with default nan ppm [ppm]\n               estimation_date: Date of MACOBAC estimation with default None\n                                with type <class 'datetime.date'>\n                       version: Atmopsheric model version with default None.co2_concentration
FAILED calibpipe/tests/unittests/utils/test_observatory.py::TestObservatory::test_db_table_read_simple - ZeroDivisionError: float division by zero
FAILED calibpipe/tests/unittests/utils/test_observatory.py::TestObservatory::test_db_table_read_conditional - ZeroDivisionError: float division by zero
======= 3 failed, 30 passed, 1 xfailed, 4 warnings in 911.13s (0:15:11) ========

Full log: https://gitlab.cta-observatory.org/cta-computing/dpps/calibrationpipeline/calibpipe/-/jobs/142637

Environment

• Version used:
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