Bump Terraform azuread provider version to 2.51.0

[jenkins-infra-updatecli]

Bump Terraform `azuread` provider version

Update Terraform lock file

changes detected: "hashicorp/azuread" updated from "2.50.0" to "2.51.0" in file ".terraform.lock.hcl"

2.51.0

Changelog retrieved from:
	https://github.com/hashicorp/terraform-provider-azuread/releases/tag/v2.51.0
ENHANCEMENTS:

* `data.azuread_users` - support for the `mails` property ([#1400](https://github.com/hashicorp/terraform-provider-azuread/issues/1400))

BUG FIXES:

* `azuread_access_package_assignment_policy` - fix a bug preventing removal of the `assignment_review_settings` block ([#1394](https://github.com/hashicorp/terraform-provider-azuread/issues/1394))

Jenkins pipeline link

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[dduportal]

No changes. Your infrastructure matches the configuration.