Bump koha version to 3.18.00
Bump koha version to 3.18.00

digibib/koha-salt-docker,digibib/koha-docker,digibib/koha-salt-docker,digibib/koha-salt-docker,digibib/koha-docker,digibib/koha-salt-docker,digibib/koha-docker,digibib/koha-docker,digibib/koha-docker,digibib/koha-docker,digibib/koha-salt-docker