Update Redis Enterprise openapi spec

[redis-enterprise-doc-sync]

Daily sync found updated API definitions.

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Note

Medium Risk
Primarily a documentation/spec update, but it introduces a new documented endpoint that returns PEM certificates and private keys, which is security-sensitive if exposed incorrectly.

Overview
Adds a new REST API definition for GET /v1/cluster/certificates, including auth scope view_cluster_info and a new ClusterCertificatesResponse schema.

The new response schema enumerates multiple cluster certificate/key fields (API, proxy, internode encryption, LDAP client, metrics exporter, SSO, syncer, and mTLS CA), marking them as optional via x-omitempty.

^{Written by Cursor Bugbot for commit 25277e8. This will update automatically on new commits. Configure here.}

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[jit-ci]

🛡️ Jit Security Scan Results

✅ No security findings were detected in this PR

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^{Security scan by Jit}