flutter-ics-homescreen: update SRCREV

flutter-ics-homescreen: update SRCREV

Update SRCREV to pick up:

5587c6a Improve background disabling
6046300 Fix TLS server name parsing
cc99d4d Connect audio settings button
ee592b5 Rotate dashboard gauges
31438c5 Configurable units fixes
5588d1d Tweak idle speed in hybrid animation logic
2d395f4 Initial mediaplayer implementation
4742fde Initial radio implementation
fcd868b Fix late initialization warning
a445ffb Add application launcher support
4ae68f5 Implement audio settings
dda6c85 Hybrid animation from env variable

As well, the configuration yaml file has been updated to work with
the changes, and a radio presets configuration yaml file has been
added.

Bug-AGL: SPEC-4971, SPEC-5001, SPEC-5026, SPEC-5027, SPEC-5028,
         SPEC-5029, SPEC-5030, SPEC-5031, SPEC-5032, SPEC-5043,
         SPEC-5053, SPEC-5054

Change-Id: I0820ab2c7eaba8cbdc8df6fb05e6244df70622d2
Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl-demo/+/29640
Tested-by: Jenkins Job builder account
Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>