[Go][Parquet] BufferedPageWriter reallocates memory during cleanup, causing a leak

[joellubi]

Describe the bug, including details regarding any error messages, version, and platform.

On bufferedPageWriter.Close() the BufferWriter.Finish() method is called but not BufferWriter.Release(). The doc for Finish states that the caller must still release the buffer.

Blocking: https://github.com/apache/arrow-adbc/pull/1866

Component(s)

Go, Parquet