Update release notes

export-noobs/00-release/files/release_notes.txt

@@ -1,4 +1,22 @@
 UNRELEASED:
+  * labwc compositor now used as the default on all models of Raspberry Pi
+  * wf-panel-pi now loads plugins dynamically at runtime
+  * New raindrop screen configuration tool to replace arandr
+  * squeekboard on-screen keyboard installed; will automatically run on systems with touchscreens, and can be manually enabled in rc-gui for others
+  * Update installer moved out of panel code into separate gui-updater package
+  * Missing cursors added to icon theme
+  * Wizard no longer auto-pairs Bluetooth HID devices by default - create the file "/boot/firmware/btautopair" to enable, or reboot wizard after first run
+  * Safety info URL added to main menu
+  * Various memory leaks in pcmanfm fixed
+  * Bug fix - crash when running Appearance Settings on headless systems
+  * Bug fix - crash when opening icon chooser in application properties dialog
+  * Translations updated
+  * RPi.GPIO replaced with rpi-lgpio
+  * Chromium updated to 129.0.6668.89
+  * Firefox updated to 131.0
+  * Raspberry Pi firmware a2e586ba98ce68f7d11b1c717ad8329b95dcb3b6
+  * Linux kernel 6.6.51 - 82a50e430ef1d6eb37d78e25aa572c1f6ea56160
+2024-07-04:
   * pipanel - allow customisation of more than 2 desktops
   * pipanel - add customisation for labwc
   * gui-pkinst - add whitelist to restrict installation to specified packages only