Move some CHANGELOG entries to the 8.13.0 part
Move some CHANGELOG entries to the 8.13.0 part

Spotted while reviewing
https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/789/diffs#diff-1.

Signed-off-by: Rémy Coutable <4ea0184b9df19e0786dd00b28e6daa4d26baeb3e@rymai.me>

LUMC/gitlabhq,shinexiao/gitlabhq,mmkassem/gitlabhq,iiet/iiet-git,dplarson/gitlabhq,axilleas/gitlabhq,t-zuehlsdorff/gitlabhq,t-zuehlsdorff/gitlabhq,openwide-java/gitlabhq,mmkassem/gitlabhq,stoplightio/gitlabhq,dplarson/gitlabhq,darkrasid/gitlabhq,dreampet/gitlab,htve/GitlabForChinese,daiyu/gitlab-zh,LUMC/gitlabhq,LUMC/gitlabhq,openwide-java/gitlabhq,axilleas/gitlabhq,iiet/iiet-git,screenpages/gitlabhq,shinexiao/gitlabhq,t-zuehlsdorff/gitlabhq,t-zuehlsdorff/gitlabhq,dreampet/gitlab,jirutka/gitlabhq,darkrasid/gitlabhq,screenpages/gitlabhq,openwide-java/gitlabhq,darkrasid/gitlabhq,shinexiao/gitlabhq,darkrasid/gitlabhq,stoplightio/gitlabhq,stoplightio/gitlabhq,dplarson/gitlabhq,htve/GitlabForChinese,htve/GitlabForChinese,htve/GitlabForChinese,shinexiao/gitlabhq,dplarson/gitlabhq,mmkassem/gitlabhq,stoplightio/gitlabhq,mmkassem/gitlabhq,jirutka/gitlabhq,dreampet/gitlab,openwide-java/gitlabhq,LUMC/gitlabhq,screenpages/gitlabhq,jirutka/gitlabhq,axilleas/gitlabhq,daiyu/gitlab-zh,daiyu/gitlab-zh,jirutka/gitlabhq,daiyu/gitlab-zh,dreampet/gitlab,iiet/iiet-git,axilleas/gitlabhq,iiet/iiet-git,screenpages/gitlabhq