GHSA-6jrj-vc65-c983: unzip-stream allows Arbitrary File Write via artifact extraction

The vulnerability stems from insufficient path sanitization in the _prepareOutStream method. The commit diff shows the critical fix was modifying the path sanitization regex pattern in this function. The original regex (^([/\][.]+[/\]+)[/\]*) only removed leading dot/slash sequences, while the patched regex ((?<=^|[/\]+)[.][.]+(?=[/\]+|$)) specifically targets and replaces parent directory traversal sequences anywhere in the path. This function directly handles path normalization before file extraction, making it the vulnerable entry point.