Update chromedp to v0.19.1 and cdproto to v0.157.4, port the browser, reader and login code to the generic Action API, group both modules in Renovate, and move the Docker build to Go 1.27.
The cdproto v0.157 tag removes input constants that chromedp v0.16 uses, so the dependency update failed to compile. Pin cdproto to the version chromedp v0.16 requires.