message: Update the name of the cipher used for storing bulk files.
diff: @@ -25,6 +25,7 @@ export type BufferSizeEvent = {identifier: BulkFileIdentifier, totalBufferSize:
  export type CloseEvent = {identifier: BulkFileIdentifier, success: boolean};
  const MAXIMUM_UPLOAD_BUFFER_SIZE_BYTES = 10 * 1024 * 1024;
  +const CIPHER_ALGORITHM = "AES-256-CBC";
  /**
  @@ -220,7 +221,7 @@ export class BulkFile {
  this._wrFile = new WriterReaderFile(filePath);
  this._wrFile.getWritableStream().on('drain', this._handleDrain.bind(this));
  - const aesCipher = crypto.createCipheriv("aes256", this._cryptoKey, this._cryptoIV);
  + const aesCipher = crypto.createCipheriv(CIPHER_ALGORITHM, this._cryptoKey, this._cryptoIV);
  this._writeStream = aesCipher;
  aesCipher.pipe(this._wrFile.getWritableStream());
  this.onClose = this._onCloseEventEmitter.event;
  @@ -298,7 +299,7 @@ export class BulkFile {
  }
  createReadableStream(): NodeJS.ReadableStream & Disposable {
  - const aesDecipher = crypto.createDecipheriv("aes256", this._cryptoKey, this._cryptoIV);
  + const aesDecipher = crypto.createDecipheriv(CIPHER_ALGORITHM, this._cryptoKey, this._cryptoIV);
  try {
  const fileReadStream = this._wrFile.createReadableStream();
  