Revert installer pin, track master again

master now targets trixie itself (matches the Debian 13 bump), and
the only tagged trixie ref was an RC explicitly marked "expect bugs".
Tracking master gets upstream trixie fixes as they land instead of
being stuck on a stale test release.

install/nextcloudpi-install.sh

@@ -13,12 +13,10 @@ setting_up_container
 network_check
 update_os
 
-NCP_INSTALLER_REF="v1.58.0-rc1"
-
 msg_warn "WARNING: This script will run an external installer from a third-party source (https://nextcloudpi.com/)."
 msg_warn "The following code is NOT maintained or audited by our repository."
 msg_warn "If you have any doubts or concerns, please review the installer code before proceeding:"
-msg_custom "${TAB3}${GATEWAY}${BGN}${CL}" "\e[1;34m" "→  https://raw.githubusercontent.com/nextcloud/nextcloudpi/${NCP_INSTALLER_REF}/install.sh"
+msg_custom "${TAB3}${GATEWAY}${BGN}${CL}" "\e[1;34m" "→  https://raw.githubusercontent.com/nextcloud/nextcloudpi/master/install.sh"
 echo
 read -r -p "${TAB3}Do you want to continue? [y/N]: " CONFIRM
 if [[ ! "$CONFIRM" =~ ^([yY][eE][sS]|[yY])$ ]]; then
@@ -27,7 +25,7 @@ if [[ ! "$CONFIRM" =~ ^([yY][eE][sS]|[yY])$ ]]; then
 fi
 
 msg_info "Installing NextCloudPi (Patience)"
-BRANCH="${NCP_INSTALLER_REF}" $STD bash <(curl -fsSL "https://raw.githubusercontent.com/nextcloud/nextcloudpi/${NCP_INSTALLER_REF}/install.sh")
+$STD bash <(curl -fsSL https://raw.githubusercontent.com/nextcloud/nextcloudpi/master/install.sh)
 msg_ok "Installed NextCloudPi"
 
 motd_ssh