chore(ralphex-fe): update versions to Bun 1.3.9, Hugo 0.156.0, Ralphex 0.19.0

Updated via GitHub Actions workflow dispatch.

Co-Authored-By: gatezh <2880401+gatezh@users.noreply.github.com>

Author: github-actions[bot]

ralphex-fe/Dockerfile

@@ -1,6 +1,6 @@
 ARG BUN_VERSION=1.3.9
 ARG HUGO_VERSION=0.156.0
-ARG RALPHEX_VERSION=0.18.0
+ARG RALPHEX_VERSION=0.19.0
 
 # Extend the ralphex base image which provides the ralphex binary at /srv/ralphex
 # along with Claude Code, Codex, Node.js, git, ripgrep, and other development tools