signing-party 1.1.5

Closes #27815.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
pebble-sdk: removed unused dependency: pillow.
pebble-sdk: update 2.0.2 bottle.

Closes #27812.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>