Updates for Orekit v12.0

INSTALL.txt

orekit-conda-recipe/README-conda-recipe.txt

orekit-conda-recipe/bld.bat

orekit-conda-recipe/build.sh

orekit-conda-recipe/meta.yaml

orekit-conda-recipe/run_test.bat

orekit-conda-recipe/run_test.sh

orekit-conda-recipe/scripts/activate.bat

orekit-conda-recipe/scripts/activate.sh

orekit-conda-recipe/scripts/deactivate.bat

orekit-conda-recipe/scripts/deactivate.sh

python_files/pyhelpers.py

python_files/test/AbstractDetectorTest.py

python_files/test/AdditionalEquationsTest.py

python_files/test/AltitudeDetectorTest.py

python_files/test/BackAndForthDetectorTest.py

python_files/test/BrouwerLyddanePropagatorTest.py

python_files/test/Context.py

python_files/test/EphemerisEventsTest.py

python_files/test/EstimationTestUtils.py