testing/ldc: upgrade to 1.19.0
The package used to depend on itself (and was broken), now using gdc we have a more sustainable bootstrap path. It needs to be upgrade to v1.19.0 to include the fixes for Musl which were made while porting 'gcc-gdc'.
The package used to depend on itself (and was broken), now using gdc we have a more sustainable bootstrap path. It needs to be upgrade to v1.19.0 to include the fixes for Musl which were made while porting 'gcc-gdc'.