Merge branch 'v46r9-release' into 'run2-patches'

Prepare v46r9 release

See merge request !4942

CMakeLists.txt

@@ -11,7 +11,7 @@
 cmake_minimum_required(VERSION 3.15)
 option(CMAKE_EXPORT_COMPILE_COMMANDS "Enable/Disable output of compile_commands.json" ON)
 
-project(LHCb VERSION 46.8
+project(LHCb VERSION 46.9
         LANGUAGES CXX)
 
 # Enable testing with CTest/CDash

ReleaseNotes/v46r9.md

+2025-02-13 LHCb v46r9
+===
+
+This version uses
+Gaudi [v39r2](../../../../Gaudi/-/tags/v39r2) and
+LCG [105c](http://lcginfo.cern.ch/release/105c/) with ROOT 6.30.08.
+
+This version is released on `run2-patches` branch and is intended for use with Run1 or Run2 data. For Run3, use a version released on `master` branch
+Built relative to LHCb [v46r8](../-/tags/v46r8), with the following changes:
+
+### Code cleanups and changes to tests ~modernisation ~cleanup ~testing
+
+- ~Build | Prefer pragma once and add missing include, !4851 (@cattanem)
+- Fix GaudiPython deprecation warnings triggered by LCG_106, !4912 (@cattanem)
+- Fixes to test reference files for Gaudi v39r1, !4684 (@cattanem)
+- Fix GaudiAlg tests and reference files for Gaudi v39, !4677 (@cattanem)
+