chore(deps-dev): Bump typedoc from 0.28.19 to 0.28.20 - #2308

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: dependabot/fetch-metadata@v2.5.0. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/