Ecole bump MACOSX_SDK_VERSION to 10.13
MACOSX_DEPLOYMENT_TARGET: # [osx and x86_64]
- "10.12" # [osx and x86_64]
MACOSX_SDK_VERSION: # [osx and x86_64]
- - "10.12" # [osx and x86_64]
-
+ - "10.13" # [osx and x86_64]
