This commits changes the fetch depth from 1 to 0 in the update-events` and `update-cli-help` actions. This is required as otherwise the PR creation would fail when the forked (https://github.com/angular-robot/angular) is not in sync with (https://github.com/angular/angular) ie the later has commits which are not in the former.
PR Close#48698
Previously, a single curly bracket was used to interpolate the `ANGULAR_CLI_BUILDS_READONLY_GITHUB_TOKEN` value which caused the value not to be provided correctly.
PR Close#48690
This commits adds an action to update the Angular CLI help contents that are used by AIO to generate CLI guides.
This also changes the setup to include the files are source files instead of having to clone the repository each time. This also simplifies the PR review process of the PR opened by the action.
PR Close#48577