flutter-ics-homescreen: update SRCREV

flutter-ics-homescreen: update SRCREV

Update SRCREV to pick up:

bf49975 Fix back navigation in settings screens
b3a67fd Make app grid element padding dynamic
dcb37db Change app grid bottom padding
daf4b42 Fix app grid scrolling
ecc867e Make wired network settings functional
9fcc67f Add support for application icons in Apps

Bug-AGL: SPEC-5268, SPEC-5296, SPEC-5297, SPEC-5322

Change-Id: I6495b6d7792cf141bdb0d3517ca222509b736f07
Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl-demo/+/30727
Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>
ci-image-boot-test: Jenkins Job builder account
ci-image-build: Jenkins Job builder account
Tested-by: Jenkins Job builder account