Update change log for v40r4

See merge request gaudi/Gaudi!1930

Update change log

See merge request gaudi/Gaudi!1893

Bump version to v40r2 and update change log

See merge request gaudi/Gaudi!1866

Update change log

See merge request gaudi/Gaudi!1836

Fix typo in change log

Development at the base of CHEP 2024 contribution https://indico.cern…

….ch/event/1338689/contributions/6010422/

Update version to v39r4

See merge request gaudi/Gaudi!1717

Update version and change log for v39r3

See merge request gaudi/Gaudi!1698

Update release notes

See merge request !1686

Prepare for v39r1 release

See merge request gaudi/Gaudi!1667