Merge branch 'fix-changelog-for-3.4' into 'master'

fix CHANGELOG.md for 3.4

See merge request !2753

(cherry picked from commit 47e396b6)

ca79f0ef fix CHANGELOG.md for 3.4
5 jobs for !2754 with cherry-pick-47e396b6
latest detached
Status Name Job ID Coverage
  Trigger
manual full-dune-2.7-clang
manual full-dune-2.7-gcc
manual full-dune-master-gcc
manual minimal-dune-2.7-gcc
 
  Downstream Modules
created trigger lecture