We currently use MacOS Mojave to test and package OTB in the CI, but the CI files still refer to the ElCapitan version (10.11.6). This MR update the version to the Mojave version tag (10.14.6).
The copyright owner is CNES and has signed the ORFEO ToolBox Contributor License Agreement.
Check before merging:
git diff develop... -U0 --no-color | clang-format-diff.py -p1 -i on latest changes and commit