style: Potential fixes for 2 code quality findings in tests/zip_crypto.rs (#615)

* Apply suggested fix to tests/zip_crypto.rs from Copilot Autofix

Co-authored-by: Copilot Autofix powered by AI <223894421+github-code-quality[bot]@users.noreply.github.com>
Signed-off-by: Chris Hennick <4961925+Pr0methean@users.noreply.github.com>

* Apply suggested fix to tests/zip_crypto.rs from Copilot Autofix

Co-authored-by: Copilot Autofix powered by AI <223894421+github-code-quality[bot]@users.noreply.github.com>
Signed-off-by: Chris Hennick <4961925+Pr0methean@users.noreply.github.com>

* Revert "Apply suggested fix to tests/zip_crypto.rs from Copilot Autofix"

This reverts commit 93eb903.

---------

Signed-off-by: Chris Hennick <4961925+Pr0methean@users.noreply.github.com>
Co-authored-by: Copilot Autofix powered by AI <223894421+github-code-quality[bot]@users.noreply.github.com>

Author: Pr0methean

tests/zip_crypto.rs

@@ -41,6 +41,8 @@ fn test_encrypt_and_decrypt_file() -> zip::result::ZipResult<()> {
     use std::io::{Read, Write};
     use zip::unstable::write::FileOptionsExt;
 
+    // Buffer size chosen to be comfortably larger than the small test archive; exact value is not
+    // significant as long as it can hold the generated ZIP data.
     const ARCHIVE_BUFFER_SIZE: usize = 2048;
 
     let mut buffer = vec![0; ARCHIVE_BUFFER_SIZE];