dns/api.yaml: add missing record types

[modular-magician]

Update the list of valid DNS record types to match the list documented at https://cloud.google.com/dns/docs/records.
In particular this was hurting people who were previously deploying DNSSEC key records via terraform.

Fixes hashicorp/terraform-provider-google#8897

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dns: added missing record types to `google_dns_record_set` resource

Derived from GoogleCloudPlatform/magic-modules#4689