codeartifact/permissions_policy: Fix equivalent policy diffs

[YakDriver]

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Relates #21968

Output from acceptance testing (us-west-2):

% make testacc TESTS="TestAccCodeArtifact_serial/RepositoryPermissionsPolicy" PKG=codeartifact
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./internal/service/codeartifact/... -v -count 1 -parallel 20 -run='TestAccCodeArtifact_serial/RepositoryPermissionsPolicy' -timeout 180m
--- PASS: TestAccCodeArtifact_serial (134.43s)
    --- PASS: TestAccCodeArtifact_serial/RepositoryPermissionsPolicy (134.43s)
        --- PASS: TestAccCodeArtifact_serial/RepositoryPermissionsPolicy/basic (38.62s)
        --- PASS: TestAccCodeArtifact_serial/RepositoryPermissionsPolicy/disappears (20.15s)
        --- PASS: TestAccCodeArtifact_serial/RepositoryPermissionsPolicy/owner (23.87s)
        --- PASS: TestAccCodeArtifact_serial/RepositoryPermissionsPolicy/disappearsDomain (19.99s)
        --- PASS: TestAccCodeArtifact_serial/RepositoryPermissionsPolicy/ignoreEquivalent (31.80s)
PASS
ok  	github.com/hashicorp/terraform-provider-aws/internal/service/codeartifact	136.183s
% make testacc TESTS="TestAccCodeArtifact_serial/DomainPermissionsPolicy" PKG=codeartifact
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./internal/service/codeartifact/... -v -count 1 -parallel 20 -run='TestAccCodeArtifact_serial/DomainPermissionsPolicy' -timeout 180m
--- PASS: TestAccCodeArtifact_serial (114.54s)
    --- PASS: TestAccCodeArtifact_serial/DomainPermissionsPolicy (114.54s)
        --- PASS: TestAccCodeArtifact_serial/DomainPermissionsPolicy/disappears (18.89s)
        --- PASS: TestAccCodeArtifact_serial/DomainPermissionsPolicy/owner (19.73s)
        --- PASS: TestAccCodeArtifact_serial/DomainPermissionsPolicy/disappearsDomain (16.02s)
        --- PASS: TestAccCodeArtifact_serial/DomainPermissionsPolicy/ignoreEquivalent (27.26s)
        --- PASS: TestAccCodeArtifact_serial/DomainPermissionsPolicy/basic (32.64s)
PASS
ok  	github.com/hashicorp/terraform-provider-aws/internal/service/codeartifact	115.922s

[ewbankkit]

LGTM 🚀.

% make testacc TESTS="TestAccCodeArtifact_serial/RepositoryPermissionsPolicy" PKG=codeartifact
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./internal/service/codeartifact/... -v -count 1 -parallel 20 -run='TestAccCodeArtifact_serial/RepositoryPermissionsPolicy' -timeout 180m
=== RUN   TestAccCodeArtifact_serial
=== RUN   TestAccCodeArtifact_serial/RepositoryPermissionsPolicy
=== RUN   TestAccCodeArtifact_serial/RepositoryPermissionsPolicy/disappearsDomain
=== RUN   TestAccCodeArtifact_serial/RepositoryPermissionsPolicy/ignoreEquivalent
=== RUN   TestAccCodeArtifact_serial/RepositoryPermissionsPolicy/basic
=== RUN   TestAccCodeArtifact_serial/RepositoryPermissionsPolicy/disappears
=== RUN   TestAccCodeArtifact_serial/RepositoryPermissionsPolicy/owner
--- PASS: TestAccCodeArtifact_serial (148.84s)
    --- PASS: TestAccCodeArtifact_serial/RepositoryPermissionsPolicy (148.84s)
        --- PASS: TestAccCodeArtifact_serial/RepositoryPermissionsPolicy/disappearsDomain (25.39s)
        --- PASS: TestAccCodeArtifact_serial/RepositoryPermissionsPolicy/ignoreEquivalent (38.74s)
        --- PASS: TestAccCodeArtifact_serial/RepositoryPermissionsPolicy/basic (39.84s)
        --- PASS: TestAccCodeArtifact_serial/RepositoryPermissionsPolicy/disappears (21.84s)
        --- PASS: TestAccCodeArtifact_serial/RepositoryPermissionsPolicy/owner (23.03s)
PASS
ok  	github.com/hashicorp/terraform-provider-aws/internal/service/codeartifact	154.610s
% make testacc TESTS="TestAccCodeArtifact_serial/DomainPermissionsPolicy" PKG=codeartifact
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./internal/service/codeartifact/... -v -count 1 -parallel 20 -run='TestAccCodeArtifact_serial/DomainPermissionsPolicy' -timeout 180m
=== RUN   TestAccCodeArtifact_serial
=== RUN   TestAccCodeArtifact_serial/DomainPermissionsPolicy
=== RUN   TestAccCodeArtifact_serial/DomainPermissionsPolicy/ignoreEquivalent
=== RUN   TestAccCodeArtifact_serial/DomainPermissionsPolicy/basic
=== RUN   TestAccCodeArtifact_serial/DomainPermissionsPolicy/disappears
=== RUN   TestAccCodeArtifact_serial/DomainPermissionsPolicy/owner
=== RUN   TestAccCodeArtifact_serial/DomainPermissionsPolicy/disappearsDomain
--- PASS: TestAccCodeArtifact_serial (124.00s)
    --- PASS: TestAccCodeArtifact_serial/DomainPermissionsPolicy (124.00s)
        --- PASS: TestAccCodeArtifact_serial/DomainPermissionsPolicy/ignoreEquivalent (31.36s)
        --- PASS: TestAccCodeArtifact_serial/DomainPermissionsPolicy/basic (33.74s)
        --- PASS: TestAccCodeArtifact_serial/DomainPermissionsPolicy/disappears (19.66s)
        --- PASS: TestAccCodeArtifact_serial/DomainPermissionsPolicy/owner (20.87s)
        --- PASS: TestAccCodeArtifact_serial/DomainPermissionsPolicy/disappearsDomain (18.37s)
PASS
ok  	github.com/hashicorp/terraform-provider-aws/internal/service/codeartifact	127.503s

[github-actions]

This functionality has been released in v3.69.0 of the Terraform AWS Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

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

[github-actions]

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