Migration to version 15.0

[OCA-git-bot]

Todo

https://github.com/OCA/maintainer-tools/wiki/Migration-to-version-15.0

Modules to migrate

• data_encryption
• mail_environment [MIG] 15.0 mail_environment #82 by @JuMiSanAr
• server_environment [MIG] server_environment: migration to 15.0 #83 by @JuMiSanAr
• server_environment_data_encryption
• server_environment_files_sample - By @amh-mw - [MIG] server_environment_files_sample: Migration to 15.0 #130
• server_environment_ir_config_parameter [MIG] 15.0 server_environment_ir_config_parameter #84 by @JuMiSanAr

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

[amh-mw]

server_environment_files_sample: #130