feat(transcoder): update the api

#### transcoder:v1beta1

The following keys were added:
- schemas.Job.properties.ttlAfterCompletionDays.format
- schemas.Job.properties.ttlAfterCompletionDays.type
- schemas.OperationMetadata.id
- schemas.OperationMetadata.properties.apiVersion.type
- schemas.OperationMetadata.properties.cancelRequested.type
- schemas.OperationMetadata.properties.createTime.format
- schemas.OperationMetadata.properties.createTime.type
- schemas.OperationMetadata.properties.endTime.format
- schemas.OperationMetadata.properties.endTime.type
- schemas.OperationMetadata.properties.statusDetail.type
- schemas.OperationMetadata.properties.target.type
- schemas.OperationMetadata.properties.verb.type
- schemas.OperationMetadata.type
- schemas.Pad.id
- schemas.Pad.properties.bottomPixels.format
- schemas.Pad.properties.bottomPixels.type
- schemas.Pad.properties.leftPixels.format
- schemas.Pad.properties.leftPixels.type
- schemas.Pad.properties.rightPixels.format
- schemas.Pad.properties.rightPixels.type
- schemas.Pad.properties.topPixels.format
- schemas.Pad.properties.topPixels.type
- schemas.Pad.type
- schemas.PreprocessingConfig.properties.pad.$ref
- schemas.SpriteSheet.properties.quality.format
- schemas.SpriteSheet.properties.quality.type

Author: yoshi-automation