chore(deps): bump rustls-webpki from 0.103.3 to 0.103.15 - #19

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions-rs/cargo@844f36862e911db73fe0815f00a4a2602c279505. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/