Update LVGL to v9.1.0

lib/lvgl/scripts/install-prerequisites.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/sh
+#!/bin/sh
 
 # Install Linux package prerequisites needed for LVGL development
 # and testing. Some less-common development packages are not included
@@ -6,4 +6,5 @@
 #
 # Note: This script is run by the CI workflows.
 sudo apt update
-sudo apt install gcc python3 libpng-dev ruby-full gcovr cmake
+sudo apt install gcc python3 ninja-build libpng-dev ruby-full gcovr cmake libjpeg-turbo8-dev libfreetype6-dev pngquant libinput-dev libxkbcommon-dev libdrm-dev pkg-config
+pip3 install pypng lz4