Backport of Remove extraneous certificate from OCSP response into release/1.12.x #20202
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Backport
This PR is auto-generated from #20201 to be assessed for backporting due to the inclusion of the label backport/1.12.x.
The below text is copied from the body of the original PR.
Since the issuer used to sign the certificate also signs the OCSP response, no additional information is added by sending the issuer again in the
certsfield of theBasicOCSPResponsestructure. Removing it saves bytes and avoids confusing Go-based OCSP verifiers which cannot handle the cert issuer being duplicated in thecertsfield.This complements #20181; if anyone uses a different cluster for Vault PKI from Cert Auth and are running Vault 1.12.x, they could update that cluster to a future 1.12 Vault release, instead of (or in addition to) updating the cluster running Cert Auth to a newer 1.13 version. This additionally improves compatibility with any other Go OCSP validation that may be occurring (e.g., Snowflake or others as reported on the upstream Go issue).
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