Remove outdated comment from caddy.sh

Cloudsmith answered 402 Payment Required for two days once Caddy's
bandwidth quota ran out, and upstream expects it to happen again
(caddyserver/dist#142). Each GitHub release carries the identical
package (same SHA256), so Debian installs it from there now. The update
drops the Cloudsmith source, seeds ~/.caddy from the installed package
so nothing is reinstalled, and keeps a customised Caddyfile.

ct/caddy.sh

@@ -38,11 +38,18 @@ update_deb_based() {
     exit
   fi
 
+  cleanup_old_repo_files "caddy"
   msg_info "Updating Caddy LXC"
   apt_update_safe
   $STD apt upgrade -y
   msg_ok "Updated Caddy LXC"
 
+  [[ -f ~/.caddy ]] || dpkg-query -W -f='${Version}' caddy >~/.caddy 2>/dev/null || true
+  if check_for_gh_release "caddy" "caddyserver/caddy"; then
+    DPKG_FORCE_CONFOLD=1 fetch_and_deploy_gh_release "caddy" "caddyserver/caddy" "binary" "latest" "/opt/caddy" "caddy_*_linux_$(arch_resolve).deb"
+    systemctl restart caddy
+  fi
+
   if command -v xcaddy >/dev/null 2>&1; then
     if check_for_gh_release "xcaddy" "caddyserver/xcaddy"; then
       setup_go

install/caddy-install.sh

@@ -14,21 +14,8 @@ network_check
 update_os
 
 setup_deb_based() {
-  msg_info "Installing Dependencies"
-  $STD apt install -y \
-    debian-keyring \
-    debian-archive-keyring \
-    apt-transport-https
-  msg_ok "Installed Dependencies"
-
-  msg_info "Installing Caddy"
-  setup_deb822_repo \
-    "caddy" \
-    "https://dl.cloudsmith.io/public/caddy/stable/gpg.key" \
-    "https://dl.cloudsmith.io/public/caddy/stable/deb/debian" \
-    "any-version"
-  $STD apt install -y caddy
-  msg_ok "Installed Caddy"
+  fetch_and_deploy_gh_release "caddy" "caddyserver/caddy" "binary" "latest" "/opt/caddy" "caddy_*_linux_$(arch_resolve).deb"
+  systemctl enable -q --now caddy
 
   prompt="${var_caddy_xcaddy:-}"
   [[ -n "$prompt" ]] || read -r -p "${TAB3}Would you like to install xCaddy Addon? <y/N> " prompt