fix: enable self signed jwt for grpc

[gcf-owl-bot]

PiperOrigin-RevId: 386504689

Source-Link: googleapis/googleapis@762094a

Source-Link: https://github.com/googleapis/googleapis-gen/commit/6bfc480e1a161d5de121c2bcc3745885d33b265a

feat: Removes breaking change from v1 version of AI Platform protos
feat: Adds a new API method FindMostStableBuild
feat: Adds BigQuery output table field to batch prediction job output config
feat: Adds Feature Store features
feat: Adds CustomJob.web_access_uris field
feat: Adds CustomJob.enable_web_access field
feat: Adds Endpoint.network, Endpoint.private_endpoints fields and PrivateEndpoints message
feat: Adds Execution.State constants: CACHED and CANCELLED
feat: Adds IndexEndpoint.private_ip_ranges field
feat: Adds IndexEndpointService.deployed_index_id field
feat: Adds MetadataService.DeleteArtifact and DeleteExecution methods
feat: Adds ModelMonitoringObjectConfig.explanation_config field
feat: Adds ModelMonitoringObjectConfig.ExplanationConfig message field
feat: Adds attribution_score_skew_thresholds field
feat: Adds attribution_score_drift_threshold field
feat: Adds fields to Study message

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