Fix platforms lists
- use
x86_64_v3-centos7-gcc11+dd4hep-opt+g
instead ofx86_64_v3-centos7-gcc11+dd4hep-opt
- updated the list of platforms in lhcb-head-2 (as discussed at PAC)
Edited by Marco Clemencic
x86_64_v3-centos7-gcc11+dd4hep-opt+g
instead of x86_64_v3-centos7-gcc11+dd4hep-opt