chore(cmsis-pack): List v8.3.6 on Keil.com and update v9.0.0-dev (#4143)

env_support/cmsis-pack/LVGL.lvgl.pdsc

@@ -36,6 +36,10 @@
   <repository type="git">https://github.com/lvgl/lvgl.git</repository>
 
   <releases>
+     <release date="2023-03-03" version="8.3.6" url="https://github.com/lvgl/lvgl/raw/release/v8.3/env_support/cmsis-pack/LVGL.lvgl.8.3.6.pack">
+      - LVGL 8.3.6 release
+      - Various fixes
+    </release>
      <release date="2023-02-26" version="9.0.0-dev" url="https://raw.githubusercontent.com/lvgl/lvgl/master/env_support/cmsis-pack/LVGL.lvgl.9.0.0-dev.pack">
       - LVGL 9.0.0-dev
       - New Driver Architecture

env_support/cmsis-pack/LVGL.pidx

@@ -2,8 +2,8 @@
 <index schemaVersion="1.0.0" xs:noNamespaceSchemaLocation="PackIndex.xsd" xmlns:xs="http://www.w3.org/2001/XMLSchema-instance">
   <vendor>LVGL</vendor>
   <url>https://raw.githubusercontent.com/lvgl/lvgl/master/env_support/cmsis-pack/</url>
-  <timestamp>2023-02-06T12:22:00</timestamp>
+  <timestamp>2023-03-03T12:22:00</timestamp>
   <pindex>
-    <pdsc url="https://raw.githubusercontent.com/lvgl/lvgl/master/env_support/cmsis-pack/" vendor="LVGL" name="lvgl" version="8.3.5"/>
+    <pdsc url="https://raw.githubusercontent.com/lvgl/lvgl/master/env_support/cmsis-pack/" vendor="LVGL" name="lvgl" version="8.3.6"/>
   </pindex>
 </index>