Update base image version in Dockerfile.build-all
Latest comentario requires go 1.24, but the base image in [Dockerfile.build-all](https://gitlab.com/comentario/comentario/-/blob/dev/Dockerfile.build-all?ref_type=heads#L19) still uses `golang:1.23-alpine` causing the build to fail.
Thanks for your work! Comentario was a beautiful addition to my setup for using [Wordpress as a Static Site Generator](https://github.com/theCalcaholic/wordpress-static-site).
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