Merge branch 'upgrade-to-expat-2.4.6' into 'develop'

Summary

Upgrade expat to 2.4.6 Update URL for NETCDF

See merge request !896 (merged)

(cherry picked from commit 852718ed)

cfb8ae4c ENH: Upgrade expat to 2.4.6 63d3668c BUG: URL for NETCDF changed

Copyright

The copyright owner is CNES and has signed the ORFEO ToolBox Contributor License Agreement.

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Check before merging:

• All discussions are resolved
• At least 2 votes from core developers, no vote.
• The feature branch is (reasonably) up-to-date with the base branch
• Dashboard is green
• Copyright owner has signed the ORFEO ToolBox Contributor License Agreement
• Optionally, run git diff develop... -U0 --no-color | clang-format-diff.py -p1 -i on latest changes and commit