Migration to version 9.0

[pedrobaeza]

Todo

https://github.com/OCA/maintainer-tools/wiki/Migration-to-version-9.0

Modules to migrate

• project_indicators - By @Chandresh-SerpentCS - [9.0][MIG] project_indicators: Migrated the module from 8.0 to 9.0 #21
• project_billing_utils - By @Chandresh-SerpentCS - [9.0] [MIG] project_billing_utils: Migrated the module in v9. #22

[github-actions]

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