Add RTA/2023.10.06 stack

Stack with fixes and additions to the PbPb HLT1. See main MRs in https://gitlab.cern.ch/groups/lhcb/-/milestones/11#tab-merge-requests

Release checklist (to be filled by the shifter)

• release build validation (to be checked with the MR author)
• RPMs deployment
• CVMFS installation
• web pages update