agl-demo-control-panel: update SRCREV

agl-demo-control-panel: update SRCREV

Update SRCREV to pick up:

262fd55 Enable secure mode in default configuration
157db1c Rework configuration saving
7a4d074 Improve vehicle simulator
8a9b40d Add ability to disable HVAC and steering wheel pages
8a51836 Simplify server configuration
733b6dc Add gitreview file for Quirky Quillback branch

Bug-AGL: SPEC-5138, SPEC-5141, SPEC-5142, SPEC-5143

Change-Id: I9545b5009cacc02e15d0f85749d5a0fbc61538ec
Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl-demo/+/29942
Tested-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>
Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>