21.05.00 - Update contributors.yaml

21.05.00 - Update contributors.yaml

    git reset --hard origin/master
    git remote add kumara https://git.koha-community.org/koha-community/kumara
    git remote add oldkoha https://git.koha-community.org/koha-community/oldkoha_1_0_7
    git merge --no-edit -s subtree kumara/master --allow-unrelated-histories
    git merge --no-edit -s subtree oldkoha/master --allow-unrelated-histories
    perl $releate_tools_dir/koha-update-contributors
    git commit -a -m"21.05.00 - Update contributors.yaml"
    perl $releate_tools_dir/koha-update-history
    git commit -a -m"21.05.00 - Update history.txt"
    git format-patch HEAD -n2