Merge branch 'release-v34r9' into 'master'

Prepare Lbcom v34r9

See merge request !666

CMakeLists.txt

@@ -11,7 +11,7 @@
 
 cmake_minimum_required(VERSION 3.15)
 
-project(Lbcom VERSION 34.8
+project(Lbcom VERSION 34.9
         LANGUAGES CXX)
 
 # Enable testing with CTest/CDash

ReleaseNotes/v34r9.md

+2023-06-12 Lbcom v34r9
+===
+
+This version uses
+LHCb [v54r9](../../../../LHCb/-/tags/v54r9),
+Gaudi [v36r12](../../../../Gaudi/-/tags/v36r12),
+Detector [v1r13](../../../../Detector/-/tags/v1r13) and
+LCG [103](http://lcginfo.cern.ch/release/103/) with ROOT 6.28.00.
+
+This version is released on the `master` branch.
+Built relative to Lbcom [v34r8](/../../tags/v34r8), with the following changes:
+
+### Fixes ~"bug fix" ~workaround
+
+- ~Calo | Fix CaloClusterEfficienncy, !652 (@jmarchan)