CHANGELOG.md: Increase the boot partition's size to 40MB
CHANGELOG.md: Increase the boot partition's size to 40MB

Signed-off-by: Michal Mazurek <a2df1e659c9fd2578de0a26565357cb273292eeb@resin.io>

resin-os/resin-edison,resin-os/resin-edison,resin-os/resin-edison