Published Windows executables should end in exe and use a zip format

Operating system: Windows
Processor architecture: N/A
Rust version: N/A
Javy version: v1.1.2

## Problem

At the moment, the _build assets_ workflow creates a Windows executable but drops the required exe extension and uses gzip instead of zip for compressing the executable. The exe extension is required on Windows for all executable binaries and Windows does not have a built in way to decompress gzip files but does have a built in way to decompress zip files.

## Error Message and Context

Technically someone could install gzip and manually rename the executable file to add the exe extension, but we should just produce executables in the correct format.