Adds identity update behavior field to Access Identity Providers

[khiller-cf]

Description

Adds identity update behavior field to Access Identity Provider SCIM Config. This field controls how we send updated identity information from SCIM to Access.

Has your change been tested?

Unit tests

Screenshots (if appropriate):

Types of changes

What sort of change does your code introduce/modify?

• New feature (non-breaking change which adds functionality)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.
• This change is using publicly documented in cloudflare/api-schemas
  and relies on stable APIs.

[github-actions]

This functionality has been released in v0.110.0.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!