artifactregistry: added registry_uri as attribute to google_artifact_registry_repository

[modular-magician]

Closes #11355

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artifactregistry: added `registry_uri` as attribute to `google_artifact_registry_repository`

Tests:

 make testacc TEST=./google/services/artifactregistry TESTARGS='-run=TestAccArtifactRegistryRepository_update'

.TF_ACC=1 TF_SCHEMA_PANIC_ON_ERROR=1 go test ./google/services/artifactregistry -v -run=TestAccArtifactRegistryRepository_update -timeout 240m -ldflags="-X=github.com/hashicorp/terraform-provider-google/version.ProviderVersion=acc"

=== RUN   TestAccArtifactRegistryRepository_update
=== PAUSE TestAccArtifactRegistryRepository_update
=== RUN   TestAccArtifactRegistryRepository_updateEmptyMvn
=== PAUSE TestAccArtifactRegistryRepository_updateEmptyMvn
=== CONT  TestAccArtifactRegistryRepository_update
=== CONT  TestAccArtifactRegistryRepository_updateEmptyMvn
--- PASS: TestAccArtifactRegistryRepository_update (16.29s)
--- PASS: TestAccArtifactRegistryRepository_updateEmptyMvn (25.40s)
PASS
ok      github.com/hashicorp/terraform-provider-google/google/services/artifactregistry 26.147s

Derived from GoogleCloudPlatform/magic-modules#14776

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