comps-f30: pull in glibc-minimal-langpack
    
    For https://fedoraproject.org/wiki/Changes/Remove_glibc-langpacks-all_from_buildroot.
    
    glibc has Requires:glibc-langpack and Suggests:glibc-all-langpacks.
    glibc-minimal-langpack has Provides:glibc-langpack, so if it is explicitly
    pulled in, glibc-all-langpacks will not be installed (unless it is pulled in
    through some other means).
    
    Uses of (LANG|LC_.*)=.._..\.(UTF-8|utf8) have been either removed, or updated to
    C.UTF-8, or BuildRequires: glibc-langpack-.. have been added, so it should be
    OK to do this change now.
    
    Signed-off-by: Stephen Gallagher <sgallagh@redhat.com>