Migration to version 18.0

[OCA-git-bot]

Todo

https://github.com/OCA/maintainer-tools/wiki/Migration-to-version-18.0

Modules to migrate

Missing module? Check https://github.com/OCA/maintainer-tools/wiki/%5BFAQ%5D-Missing-modules-in-migration-issue-list

• hr_shift - By @david-banon-tecnativa - [18.0][MIG] hr_shift: Migration to version 18.0 #25
• hr_shift_holidays_public - By @Abranes - [18.0][MIG] hr_shift_holidays_public: Migration to 18.0 #18