d/aws_acmpca_certificate_authorities: new data source

[alexbacchin]

Rollback Plan

If a change needs to be reverted, we will publish an updated version of the library.

Changes to Security Controls

Are there any changes to security controls (access controls, encryption, logging) in this pull request? If so, explain.
No

Description

This pull request introduces a new data source for AWS ACM PCA Certificate Authorities to the provider, allowing users to query and filter certificate authorities, including those shared via AWS Resource Access Manager (RAM). The implementation includes the data source code, integration into the service package, comprehensive acceptance tests, and documentation for usage and arguments.

New Data Source Implementation

aws_acmpca_certificate_authorities data source, enabling retrieval of ACM PCA Certificate Authority ARNs with optional filtering by resource owner (SELF or OTHER_ACCOUNTS).
The API does not support additional filtering.

Relations

Closes #44255

References

Output from Acceptance Testing

% make testacc TESTS=TestAccACMPCACertificateAuthoritiesDataSource PKG=acmpca
make: Verifying source code with gofmt...
==> Checking that code complies with gofmt requirements...
make: Running acceptance tests on branch: 🌿 f-aws_acmpca_certificate_authorities 🌿...
TF_ACC=1 go1.24.8 test ./internal/service/acmpca/... -v -count 1 -parallel 20 -run='TestAccACMPCACertificateAuthoritiesDataSource'  -timeout 360m -vet=off
2025/11/06 19:24:19 Creating Terraform AWS Provider (SDKv2-style)...
2025/11/06 19:24:19 Initializing Terraform AWS Provider (SDKv2-style)...
=== RUN   TestAccACMPCACertificateAuthoritiesDataSource_basic
=== PAUSE TestAccACMPCACertificateAuthoritiesDataSource_basic
=== RUN   TestAccACMPCACertificateAuthoritiesDataSource_otherAccounts
=== PAUSE TestAccACMPCACertificateAuthoritiesDataSource_otherAccounts
=== CONT  TestAccACMPCACertificateAuthoritiesDataSource_basic
=== CONT  TestAccACMPCACertificateAuthoritiesDataSource_otherAccounts
--- PASS: TestAccACMPCACertificateAuthoritiesDataSource_basic (19.30s)
--- PASS: TestAccACMPCACertificateAuthoritiesDataSource_otherAccounts (37.10s)
PASS
ok      github.com/hashicorp/terraform-provider-aws/internal/service/acmpca     41.754s

[github-actions]

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