[ImgBot] Optimize images

*Total -- 81.76kb -> 70.21kb (14.13%)

/skills/napkin/assets/step2-whiteboard.svg -- 8.01kb -> 6.63kb (17.19%)
/plugins/napkin/skills/napkin/assets/step2-whiteboard.svg -- 8.01kb -> 6.63kb (17.19%)
/skills/napkin/assets/step1-activate.svg -- 5.95kb -> 4.96kb (16.69%)
/plugins/napkin/skills/napkin/assets/step1-activate.svg -- 5.95kb -> 4.96kb (16.69%)
/plugins/napkin/skills/napkin/assets/step4-share.svg -- 6.58kb -> 5.50kb (16.29%)
/skills/napkin/assets/step4-share.svg -- 6.58kb -> 5.50kb (16.29%)
/skills/napkin/assets/step3-draw.svg -- 8.50kb -> 7.17kb (15.73%)
/plugins/napkin/skills/napkin/assets/step3-draw.svg -- 8.50kb -> 7.17kb (15.73%)
/skills/napkin/assets/step5-response.svg -- 7.14kb -> 6.17kb (13.53%)
/plugins/napkin/skills/napkin/assets/step5-response.svg -- 7.14kb -> 6.17kb (13.53%)
/website/public/images/Copilot_Icon_White.svg -- 3.14kb -> 3.11kb (0.69%)
/website/public/images/favicon.svg -- 3.14kb -> 3.11kb (0.69%)
/website/public/images/Copilot_Icon_Black.svg -- 3.14kb -> 3.11kb (0.69%)

Signed-off-by: ImgBotApp <ImgBotHelp@gmail.com>

Author: ImgBotApp