[ci] disabling tbb on macos (openmp issue?)

Author: julien-tierny

.github/workflows/test-macos.yml

@@ -87,6 +87,7 @@ jobs:
           -DTTK_ENABLE_MPI=FALSE \
           -DTTK_ENABLE_CPU_OPTIMIZATION=FALSE \
           -DTTK_ENABLE_SHARED_BASE_LIBRARIES=TRUE \
+          -DTTK_ENABLE_TBB=FALSE \
           -DTTK_IMPLICIT_PRECONDITIONS_THRESHOLD=64*64*64 \
           $GITHUB_WORKSPACE