Bug: Input file handle is never closed, causing a `ResourceWarning` in Python 3.11+

[DeflateAwning]

The input file handle doesn't appear to be closed properly, resulting in a ResourceWarning in modern Python versions. It would be great if this library automatically closed the handle properly.

[dilshod]

This issue has been fixed in commit c230a42. The fix adds proper context manager support to ensure file handles are closed automatically, eliminating the
ResourceWarning in Python 3.11+.

The changes are available in the latest code on GitHub and will be included in the next release. Thank you for reporting this issue!