flutter-cluster-dashboard: update SRCREV

Update flutter-clutter-dashboard SRCREV to pick up KUKSA.val
databroker gRPC API changes, update its YAML configuration files to
match, and add the JWT authorization token the configuration requires.

Bug-AGL: SPEC-4762

Change-Id: I294b1b26e596fe650d194dca78adde7394d30d75
Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl-demo/+/29244
Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>
Tested-by: Jenkins Job builder account
ci-image-build: Jenkins Job builder account
ci-image-boot-test: Jenkins Job builder account