not_good_feat_or_fix: remove SSL cert verification for EEN instance connection

[garciagenrique]

In case we would need to proceed this way

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

Files with missing lines	Coverage Δ
reana_jupyterlab/handlers/connection.py	89.28% <100.00%> (ø)

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