Reverse dependencies for iostruct

Latest version of the following gems require iostruct

Gem	Version	Date	Downloads
pedump +6.59 Million Downloads	`0.7.6` January 28, 2026	January 28, 2026	6.59 Million
zpng +671 Thousand Downloads	`0.4.6` January 28, 2026	January 28, 2026	671 Thousand
zsteg +651 Thousand Downloads	`0.2.14` January 28, 2026	January 28, 2026	651 Thousand
efivalidate +9.33 Thousand Downloads	`1.2.0` January 08, 2018	January 08, 2018	9.33 Thousand
xaba +3.34 Thousand Downloads	`0.1.1` June 11, 2024	June 11, 2024	3.34 Thousand