[simple-plist] Prototype Pollution in simple-plist

simple-plist v1.3.0 was discovered to contain a prototype pollution vulnerability via .parse().

References

• https://nvd.nist.gov/vuln/detail/CVE-2022-26260
• https://github.com/wollardj/simple-plist/issues/60
• https://github.com/advisories/GHSA-gff7-g5r8-mg8m