[ImgBot] Optimize images

*Total -- 6,302.10kb -> 6,261.47kb (0.64%)

/hackathon/offline-with-legend-state/assets/favicon.png -- 1.43kb -> 1.38kb (3.82%)
/challenges/foundation/password.gif -- 64.89kb -> 64.16kb (1.12%)
/hackathon/onboarding/assets/onboarding.gif -- 1,891.90kb -> 1,875.96kb (0.84%)
/challenges/ecosystem/shell-path.gif -- 607.78kb -> 603.34kb (0.73%)
/challenges/ecosystem/storybook-first-launch.gif -- 1,124.70kb -> 1,117.16kb (0.67%)
/challenges/ecosystem/expoTool.gif -- 404.91kb -> 402.25kb (0.66%)
/hackathon/nerd-fm/assets/preview.gif -- 2,206.49kb -> 2,197.23kb (0.42%)

Signed-off-by: ImgBotApp <[email protected]>

Author: ImgBotApp