`install-prerelease` (packages, dependencies) is not a valid property

[pierrand]

Using the install-prerelease property in packages.yml and dependencies.yml results in a runtime error during dbt deps execution.

Example packages.yml:

packages:
  - package: dbt-labs/dbt_utils
    version: ">=1.0.0"
    install-prerelease: true

Error message:

Runtime Error
  The packages.yml file in this project is malformed. Please double check
  the contents of this file and fix any errors before retrying.
 
  You can find more information on the syntax for this file here:
  https://docs.getdbt.com/docs/package-management
 
  Validator Error:
  {'package': 'dbt-labs/dbt_utils', 'version': '>=1.0.0', 'install-prerelease': True, 'unrendered': {...}} is not valid under any of the given schemas

According to the documentation, the correct property name is install_prerelease