feat: flex python version to make all 3.10 versions compatible

[d0choa]

Requiring a very specific version of python package 3.10.8 might be very stringent. This PR attempts to allow the package installation in any 3.10.X version as a first step.

[codecov-commenter]

Codecov Report

Attention: 129 lines in your changes are missing coverage. Please review.

Comparison is base (42b366c) 85.67% compared to head (95c3637) 86.20%.
Report is 57 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #406      +/-   ##
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+ Coverage   85.67%   86.20%   +0.53%     
==========================================
  Files          89       95       +6     
  Lines        2101     2596     +495     
==========================================
+ Hits         1800     2238     +438     
- Misses        301      358      +57     

Files	Coverage Δ
src/airflow/dags/common_airflow.py	90.38% <100.00%> (ø)
src/airflow/dags/dag_preprocess.py	100.00% <ø> (ø)
src/airflow/dags/finngen_preprocess.py	100.00% <100.00%> (ø)
src/airflow/dags/gwas_catalog_harmonisation.py	43.47% <ø> (ø)
src/airflow/dags/gwas_curation_update.py	100.00% <100.00%> (ø)
src/otg/cli.py	91.66% <100.00%> (+21.66%)	⬆️
src/otg/common/session.py	87.50% <100.00%> (+0.32%)	⬆️
src/otg/config.py	100.00% <100.00%> (ø)
src/otg/dataset/dataset.py	91.80% <100.00%> (ø)
src/otg/dataset/l2g_feature_matrix.py	82.92% <100.00%> (+7.31%)	⬆️
... and 35 more

[d0choa]

I changed my local python version to 3.10.13 (pyenv + poetry), built a wheel, uploaded it to the bucket, and installed in dataproc (3.10.8). Everything seems to be working without problems.

[ireneisdoomed]

You need to change how we parse the Python version in install_dependencies.sh (what we run when we do make setup-dev).
It currently parses the TOML, I think we can simply read from .python-version. Sth like:

echo "Activating Pyenv environment with a Python version required for the project..."
if [ -f ".python-version" ]; then
    PYTHON_VERSION=$(cat .python-version)
else
    echo ".python-version file not found."
    exit 1
fi

For consistency and simplicity, I think it is a good idea to lock the version we use for development (defined in .python-version) and still support different Python subversions for our users (defined in the TOML).
Let me test this a bit more.

[ireneisdoomed]

Thanks for the changes!